Non-classical settings are used for the convenience of playing certain musical genres or pieces of music.

Classic setting method

1. tuning fork
2. The 1st string is used to tune the 2nd string, which, being pressed at the V fret, should sound the same as the 1st open (not pressed) string.
3. The 3rd string, pressed on the 4th fret, is tuned to the 2nd open string.
4. The 4th string, pressed at the V fret, is tuned to the 3rd open string.
5. The 5th string, pressed at the V fret, is tuned to the 4th open string.
6. The 6th string, pressed at the V fret, is tuned to the 5th open string.

Tuning with harmonics and temperament

Allows for much more precise tuning, since the accuracy of the frets is not always sufficient.

1. The 1st string is tuned using the reference sound - the sound of a tuning fork - or the sound of an already tuned musical instrument.
2. The 6th string is tuned so that its harmonic at the 5th fret sounds in unison with the 1st string.
3. The 5th string is tuned so that its harmonic at the 7th fret sounds in unison with the 1st string, and then it is slightly pulled up so that a beat occurs with a frequency of 0.372 Hz (one beat in 2.7 seconds).
4. The 4th string is tuned so that its harmonic at the 7th fret sounds in unison with the harmonic of the 5th string at the 5th fret, and then slightly tightened so that a beat occurs with a frequency of 0.497 Hz (one beat per 2.01 seconds).
5. The 3rd string is tuned so that its harmonic at the 7th fret sounds in unison with the harmonic of the 4th string at the 5th fret, and then slightly tightened so that a beat occurs with a frequency of 0.664 Hz (one beat per 1.51 seconds).
6. The 2nd string is tuned so that its harmonic on the 5th fret sounds almost in unison with the harmonic of the 1st string on the 7th fret, but is just a little short so that beats with a frequency of 1.12 Hz are heard (one beat per 0.9 seconds).

When tuning using the tuning fork A (“A”), the 5th string is tuned first (the harmonic on the V fret in unison with the tuning fork), then the 1st and 6th, and then the 4th, 3rd and 2nd.

If you have good hearing and have gained enough experience, you can do without using harmonics, catching the beat of overtones in the sound of open strings.

Since changing the string tension leads to deformation of the guitar body and detuning of the remaining strings, it is recommended to tune the guitar in 2-3 iterations, the first of which can be done without temperament (without carefully counting the beat frequency).

Lower tunings of a six-string guitar

Decreased (i.e. lower than the normal EBGDAE tuning) tunings are used for more comfortable playing a certain key, or to obtain a lower, “heavy” sound. In particular, many rock guitarists love the so-called. Drop tunings, which are named by adding to “Drop” a note on the 6th string that drops 1 tone below the first (for example: Drop C = DAFCGC). To rebuild from classical system in any lowered mode, all the strings of the guitar are lowered by a certain interval (for example, to change to tuning D, you need to lower all the strings of the guitar by a tone). To lower the guitar's tuning by more than a tone, you may need to change the strings to thicker ones due to the weakening of their tension. Also, for tunings below B (B), mostly baritone guitars are used.

String	Scale E♭ (E-flat)		Build D (re)		Scale D♭ (D-flat)		Build C (before)		System B (si)
	Note	Frequency (in hertz)	Note	Frequency	Note	Frequency	Note	Frequency	Note	Frequency
First	e♭¹ (E-flat first octave)	311.13	d¹ (D first octave)	293.66	d♭¹ (D-flat first octave)	277.18	c¹ (to the first octave)	261.63	b (B small octave)	246.94
Second	b♭ (B-flat small octave)	233.08	a (A small octave)	220.00	a♭ (A-flat small octave)	207.00	g (small octave sol)	196.00	g♭ (G-flat small octave)	185.00
Third	g♭ (G-flat small octave)	185.00	f (f small octave)	174.62	e (minor octave E)	164.81	e♭ (small octave E-flat)	155.56	d (small octave D)	147.83
Fourth	d♭ (D-flat small octave)	138.59	c (to small octave)	130.82	B (big octave B)	123.48	B♭ (B-flat major octave)	116.54	A (A major octave)	110.00
Fifth	A♭ (A-flat major octave)	103.80	G (major octave G)	98.00	G♭ (G flat major octave)	92.50	F (major octave F)	87.31	E (major octave E)	82.41
Sixth	E♭ (major octave E-flat)	77.78	D (major octave D)	73.91	D♭ (D-flat major octave)	69.30	C (to major octave)	65.41	B¹ (B counter octave)	61.74
Sheet music

Open C

One of characteristic features is the ease of extracting basic major chords. A simple barre on the 2nd fret will give "D", 4th fret will give "E", 5th fret will give "F" and so on. Open strings will give you "C".

In order to tune a guitar in “Open C”, you need (starting from the “standard tuning”): 1st string (thin) Leave as in “ standard system" - "Mi" ("E")
2nd string. Raise half a step to “C” (“C”)
3rd string. Leave as in “standard tuning” - “Salt” (“G”)
4th string. Lower one step to “Before” (“C”)
5th string. Lower one step to “Salt” (“G”)
6th string (thick). Lower by two steps from “E” to “Do” (“C”)

Raised tunings of a six-string guitar

Tuning a guitar, especially a classical one, can damage the instrument., as well as to injuries due to a sudden break of a tightened string.

To increase the tuning, you can use a capo. If rebuilding your guitar is necessary, it is recommended to use a thinner set of strings.

String	Build F (fa)		Tuning F# (F-sharp)		Tuning G (sol)		G# scale (G sharp)		System A (la)
	Note	Frequency (in hertz)	Note	Frequency	Note	Frequency	Note	Frequency	Note	Frequency
First	f¹ (fa first octave)	349.23	f¹# (F-sharp first octave)	369.99	g¹ (sol of the first octave)	392.00	g¹# (G-sharp first octave)	415.30	a¹ (A first octave)	440.00
Second	с¹ (to the first octave)	261.63	с¹# (C-sharp of the first octave)	277.18	d¹ (D first octave)	293.66	D¹# (D-sharp first octave)	311.13	e¹ (E first octave)	311.13
Third	g# (G-sharp small octave)	207.00	a (A small octave)	220.00	a# (A-sharp small octave)	233.08	b (B small octave)	246.94	c¹ (to the first octave)	261.63
Fourth	d# (d-sharp small octave)	155.56	e (minor octave E)	164.81	f (f small octave)	174.62	f# (F-sharp small octave)	185.00	g (small octave sol)	196.00
Fifth	A# (A-sharp major octave)	116.54	B (big octave B)	123.48	c (to small octave)	130.82	c# (C-sharp small octave)	138.59	d (small octave D)	147.83
Sixth	F (major octave F)	87.31	F# (F-sharp major octave)	92.50	G (major octave G)	98.00	G# (G-sharp major octave)	103.80	A (A major octave)	110.00
Sheet music

"Drop D" formation

This tuning differs from the classical one in that it is lowered by tone sixth string. It is often used by hard rock electric guitarists because it makes it easier to play 5th chords. power-chord), also some classical guitar works were written for him (in the keys of D major and D minor).

"Drop C" formation

Used to produce an even lower and “heavier” sound on an electric guitar. Unlike the classical system, all strings except the sixth tune in to tone below and sixth string- on two tones.
Like Drop tuning D is used to play fifth chords.

Double Drop-D formation

The tuning is similar to Drop D, differing in that the first string is lowered a tone. For tuning from classical tuning first And sixth the string is lowered to tone.
In this tuning there are four top open strings the guitars form a G major chord, making it easier to play with a slide. Double drop D was often used by performer Neil Young.

Build "DADGAD"

The tuning most often used in folk music. It was invented by British guitarist David Graham for more convenient playing from notes recorded for violin or bagpipes.
To change the “DADGAD” system from the classic one, you need to lower it to tone first, second And sixth strings.

Build "DADDAD"

The “Papa-Papa” tuning is most suitable both for use in folk music (Celtic) and for playing rhythm guitar parts in “heavy” (alternative) music, 4 notes at a time. To change the tuning “DADDAD” from the classical one, you need to lower it to tone first, second And sixth strings. A third tune in unison with fourth.

Build "Open D"

In this tuning, the open strings form a D major chord. It is used primarily on slide guitars.
To rebuild into this system from the classical first, second And sixth strings drop to tone, third goes down to semitone.

Build "Open G"

In this tuning, the open strings form a G major chord.
To change to "Open G" tuning from the classic first, fifth And sixth strings drop to tone.

"New Standard"

Also known as "Crafty tuning". A tuning developed by musician Robert Fripp and used by him since 1983. In contrast to the classical “quart” tuning, the tuning proposed by Robert Fripp is closer to bowed string instruments, and first, second And third the strings are tuned similarly to a violin. Tuning to this tuning may require replacing the lower strings with thicker ones and the upper strings with thinner ones.

"Alternative tuning Cross A"

E-A-E-A-E-A. "Sitar A" is an alternative lowered guitar tuning. Reminds me of the sound of an Indian sitar. Great for creating Indian (oriental) music.

Seven-string tunings

Standard

Build seven strings string guitar mixed - terts-quart, so the chord of the open strings is consonant (major quartet-sixth chord), in contrast to six string guitar. This system is considered classical (academic).

In this article on the site we will talk about alternative guitar tunings.

Unusual setting guitars are a type of tuning that differs from the classical and generally accepted fourth tuning.

It is important to understand that we are talking here about open strings, that is, notes will be extracted from open strings without pressing.

The classic tuning of a six-string guitar in notes looks like this (from the first string to the sixth): E (mi), H (si), G (sol), D (re), A (la), E (mi).

This tuning is used by guitarists 95% of the time and is considered the default tuning.

For example, if you see a chord grid with the indicated finger placement, it means that this classical tuning is implied, and you only need to use it.

On the other hand, there are a lot musical groups, who take advantage of their individual customization of tools. Often, such an alternative tuning differs little from the generally accepted one, and the changes affect only individual strings.

For example, the sixth bass string in heavy musical styles often drops a tone lower - from MI - to RE, adding an additional seventh string SI (the thickest).

Similar techniques of alternative tuning are used on the bass guitar, especially the five-string, where instead of the classical MI there is a SI or even a SI-flat in the bass.

If you look at the tabs of the same Korn, Sepultura or Cannibal Corpse, you will definitely notice the use of alternative guitar tuning.

However non-standard setting The guitar is not limited to just one string. The same metal bands, in order to give the music more heaviness and darkness, rebuild the entire guitar.

For example, a classical guitar tuning often shifts entirely down a half step, moving from the general tuning of fourths MI to the general tuning of RE.

All this is implemented simply: all the strings of the guitar are lowered at the same interval lower, which achieves a special lowered sound.

On the other hand, alternative guitar tunings are often used in other styles.

In jazz, in blues, in grunge and even in rock.

For example, when playing with a slider (a special tip placed on the guitarist’s finger), it is very convenient to line up the guitar in fifths, so that when the fret is pressed, a whole chord can be heard without dissonant notes. Similar practices are found in other styles of music.

Unusual guitar tuning, alternative tuning

In order not to bore the reader with long stories, we will present several alternative tuning options for a six-string guitar. You can use these settings variations at your own discretion.

For example, to diversify your playing, to find new musical ideas, to change the monotonous classical sound of an instrument...

Alternative tuning of a guitar is usually implemented so that all of the instrument's open strings produce a specific minor or major chord.

When playing in this tuning, you can simply press entire frets of the guitar and get new chords.

For example, by tuning a guitar in D major and plucking all the strings at the fifth fret, you will get a pure G major, and at the seventh fret you will get an A major.

Note: The examples below indicate an alternative order of notes from the SIXTH string to the FIRST string (the sixth is the far left and the first is the far right).

To execute correct setting you will have to either tighten or loosen individual strings, go beyond the generally accepted tuning.

1. Alternative guitar tuning in D major (D):

2. Unusual guitar tuning in G major (G):

3. Tuning a six-string guitar in the key of C major (C):

4. Alternative tuning E major (E):

5. Don't standard tuning G minor (Gm):

6. Alternative guitar tuning in D minor (Dm):

7. Unusual system six-string guitar in the key of A minor (Am):

And a few more completely unusual configuration options:

8. SOL fret tuning (G):

9. Alternative tuning in PE fret (D):

10. Guitar stand in A major (A major):

11. Tuning a guitar with sol bass:

12. Unusual tuning of an instrument with bass BEFORE:

13. Bass retuned to PE (D):

14. Guitar tuning with a lowered first string:

Note: "B" is the symbol for B-flat, and simply B is written as "H". Moreover, in the pictures for this article, “B” indicates the note SI.

This confusion is associated with the notation of the SI note in various options musical notation, but don't let that scare you. In the article, the pure note SI is designated exclusively as “H”.

As you can see, there are different approaches to rebuilding a six-string instrument. In some cases, all notes are changed, and in some situations, only some strings are twisted (not all).

For example, changes are often made to the bass strings, and you may see this option especially often. The most problematic type of guitar tuning is adding strings.

To implement such a tuning, you will either need to use a seven-string instrument, or shift all the strings, adding a thick B string in the bass.

In general, such alternative settings you could come up with your own by experimenting with different guitar tunings.

Don't think that everything possible options are limited only to the 14 examples described above. In fact, there are many, many more alternative configuration methods!

One of the problems that every guitarist faces while learning is choosing a guitar tuning. The guitar tuning is determined by the sound of the open strings; accordingly, the transition to one or another key is accomplished by tuning the strings to the appropriate notes. Below is a list of the most widely used tunings:

. "Spanish" or standard. This tuning is considered a classic. This is where mastery of playing technique begins. Many people continue to play it after completing their training, since this system is universal. Designation - EBGDAE, according to strings (1st to 6th).

Drop D. One of the popular tunings, often used in rock music, especially by hard rock performers. Literally translated as "lowered D". The reason for this name lies in the fact that in this tuning the 6th string sounds a tone lower than in the standard tuning, that is, it corresponds to the note D (D). This type of tuning sounds best on an electric guitar.

Drop C. This guitar tuning, like the previous one, is based on the fact that the sixth string sounds a full tone lower than the first. However, with Drop C, strings one through five are first tuned exactly one step down from standard tuning. That is, we get DAFCGC. In this tuning the guitar sounds lower and heavier. Used primarily in heavy music.

Open D. This tuning is most often used when playing slide guitar.

Elevated and lowered tunings. Often musicians lower or raise the guitar tuning by a semitone, a tone, or even more. All strings can be tuned the same or differently. However (especially classic ones) when played in high formation they are at risk of getting damaged.
. Instrumental scale. Implies a standard tuning for another instrument. You can tune it like a balalaika, charango, or cithara.

I would also like to mention that the guitar, unlike many musical instruments, is not tuned in fifth tuning. Why, despite the fact that the fifth gives the purest and most pleasant sound, is the guitar tuned in such an incomprehensible, at first glance, way? The answer to this question is more than simple: standard guitar tuning provides the greatest simplicity and ease of play.

Where to start? Naturally, with mastering the technique of playing in the classical (Spanish) system. Only after studying musical literacy, especially chords, you can choose in which tuning it is more convenient to play this or that chord, this or that song. It is worth noting that for a beginner to play alternative system it will be much more difficult, especially if he does not know the barre technique.

If you play or plan to play in the future, it's worth special attention on the geometry of the neck, especially the height of the strings. The guitar may need to be re-tuned to avoid loose strings and rattling when played in the new tuning. Electric guitars for beginners are not designed for playing alternative tunings, and their sound, for example, in Drop C, may not please you. Be sure to take this into account when purchasing!

A natural question arises: "how to tune a 6 string guitar for a beginner?". If you have big plans and want to become a guitarist from God, at a minimum you need to be able to tuning your guitar correctly. But even if there are no such plans, you will still have to tune the guitar).

“I can’t tune my guitar” is a phrase you can often hear from a beginning guitarist, but first, let’s figure out how the strings should be tuned. The strings on a guitar are numbered from bottom to top, from the thinnest string to the thickest..

10 Tips: How to Play Guitar with Good Technique

With classic guitar tuning The 6th string is tuned to , the Latin designation "E" is often used. Usually the sixth string is tuned first, and the rest from there, but more on that later. This is how the strings should be tuned when classical system:

• e (the first, thinnest string is the note "E")
• B (second string, note "B")
• G (third string, G note)
• D (fourth string, note "D")
• A (fifth string, note "A")
• E (the sixth, thickest string is the note "E")

Now that we know how the strings should be tuned, let's try to tune them. By the way, you know ? To do this, we will use pegs or, as some beginners call them, “twisters”). can be turned in one or the other direction.

By turning the peg clockwise we tighten the string, giving it a higher sound, and accordingly turning it counterclockwise we loosen the string and it sounds lower.

When tuning a 6 string guitar, turn you need to be careful so as not to break the string, especially for beginner guitarists. With experience, you will feel the tension of the string much more accurately, but for now, be more careful and turn the “twists” carefully.

Tuning the 6th string

First of all, we tune the sixth string on the guitar. To do this, we need a so-called reference sound, specifically the note “E”. Where can I get it? You can listen to it on our website, take it on another tuned musical instrument, you can use a tuning fork, or go to YouTube and search for “E notes for guitar tuning” or something like that.

Some people have perfect pitch and can determine the pitch of a note without using the above methods. This quality of hearing can be developed, but as a rule it is innate. However, not all professionals have such skills, so the method proposed below is used by both experienced guitarists and beginners.

And so, we have found a “sample” note, let’s start tuning. Tuning a 6-string guitar, as well as playing any other musical instrument, requires at least some degree of hearing. The presence of hearing in a beginner is very easy to determine, if you are able to distinguish which of two notes sounds higher and which lower, then you definitely have hearing. This is what we need now.

How to learn to play guitar from scratch at home?

Play standard note "mi" and at the same time start plucking the sixth string of your guitar. Do you feel the difference? Does your guitar string sound lower than the reference note? So you need to tighten it up a little, twist smoothly and continue tuning the 6th string until our string and the reference note sound . Try tightening and loosening the string a little until you achieve the desired sound.

Tuning the rest of the strings

can be tuned in a similar way, using reference notes, but as a rule, “in everyday life” they are tuned relative to the 6th string. The procedure is as follows:

We will use the 6th string clamped on the 5th fret and the 5th string open (that is, not clamped on any fret). We alternately pluck the fifth and sixth strings and adjust the sound of the fifth string until we achieve unison.

The remaining strings are tuned according to a similar pattern, but with a slight correction (pay attention to the setting of the second string). I will describe the entire string tuning scheme:

• Sixth string - tune either by reference note or by ear.

There are a lot of bands in the world that play in a variety of tunings. It seems that one can get confused in such diversity. But if you look closely, it turns out that almost all tunings belong to one of several common types, which I will now describe.

In the pictures below I have depicted the “formulas” of these types. It’s not very visual, but it’s beautiful and New Year’s-like. The numbers indicate the interval between adjacent strings. For example, in standard tuning, the second string is 5 semitones lower than the first, the third is 4 semitones lower than the second, and so on.

This sequence is familiar to anyone who has tuned a guitar “by itself”:

Any tuning with the same sequence of intervals (5-5-5-4-5, if you count from bottom to top) is also a standard tuning, only lowered (or higher). The same chord and scale fingerings will work in it. Any part written in E standard can be played in D standard tuning, it will simply sound a tone lower. The very essence of the tuning - the intervals between adjacent strings - remains the same.

From a "just play" point of view EADGBE- this is the same as DGCFAD. I want to play something from Death, and a guitar in standard tuning is not a problem, we look for taboos and play. It will just sound a tone higher. Because the TYPE of structure is the same. Other options:
- raise the original by a tone in the audio editor and play along with it.
- lower the guitar with a pitch shifter in real time and play to the unaltered original.
- record the minus in standard tuning and play to it.

And if the intervals are different, then we are talking about a different TYPE of structure. If you want to play something from Killswitch Engage, you need to understand what type of system it is. And it turns out that they CGCFAD- this is the same as DADGBE, but a tone lower. So all you have to do is switch to good old DropD.

The easiest way to determine the type of tuning is to read this post, and then enter the tuning in guitarpro and raise and lower the whole thing until something familiar or as close as possible to the standard appears:

I have provided examples for each type of structure. If I write only the name of the group, it means that this structure is the main one for it. It's the same with albums. If a song is listed, the band made one or more songs in that tuning, but used others more often.

Then I indicate the pros and cons of the tuning and which version is closest to the standard tuning (“for testing”). If “for trial” is not indicated, it means that the tuning requires a custom set of strings in any of its variants.

Standard tuning

Standard tuning is a tuning in which all intervals between the strings are 5 semitones, and only between the 2nd and 3rd strings there are 4 semitones. The most standard version (which is simply called the standard tuning) is the one that begins and ends with E - EADGBE. All other options are named by open note, which is obtained on the first or sixth string: for example, D standard.

E standard	EADGBE	The vast majority of all groups in the world. True, it is not so easy to find a large/famous group that would play ONLY in Mi standard. All the heroes of rock are the Beatles, Rolling Stones, Pink Floyd and so on, at least sometimes they turned to other systems. Even AC/DC has several songs in Eb standard. Perhaps the only classic of rock that can be cited is Queen, and even then I’m not entirely sure ( update: Queen also disappears: they have Headlong in DropD). It’s even more difficult with metalheads. All major bands either originally played in lowered tunings, or switched to them over time. Well, again, Burzum and Darkthrone probably have everything in standard order.
Eb standard	EbAbDbGbBbEb	Jimi Hendrix, Stevie Ray Vaughan, Black Sabbath, Motorhead, Guns"n"Roses
D standard	DGCFAD	Death, Children Of Bodom, Nightwish, Gojira, Ghost, Nirvana in "Lithium", Metallica in "Sad But True"
C# standard	C#BEG#	Black Sabbath on the album "Master Of Reality", My Dying Bride, Limp Bizkit Dying Fetus
C standard	CFBbEbGC	Dethklok, High on Fire, In Flames, Queens of the Stone Age, Kyuss
B standard	BEADF	Amon Amarth, Crowbar, Soilwork, Carcass, Type O Negative, Sepultura in "Roots"
Bb standard	BbEbAbDbFBb	Cannibal Corpse in "Blowtorch Slaughter"
A standard	ADGCEA	KYPCK

Some groups (Placebo, Vektor), on the contrary, raise the standard scale by a semitone. Johnny Marr of the Smiths used a tuning a step higher than standard on some songs ("This Charming Man").

+ Standard tuning is the ideal compromise between range and ease of playing chords and melodies. Friendly with many keys. This is done especially clearly after you try several alternative tunings: many of them are better than the standard one in one of the parameters, but they are necessarily worse in another or several. The standard has become a standard for a reason - it is the most practical and universal.
– Sometimes you want something different)

Drop tunings

Drop tuning is a standard tuning with the sixth string lowered a tone.
They are named after the open note produced on the sixth string. For example, DropD is DADGBE.

+ Range extension down, power chords with one finger, and their extensions up (like 447454), the first five strings are tuned as in the standard - play solos as much as you want
– Slightly less versatility than standard tuning. The increased “gap” between the 5th and 6th strings somewhat limits play in the lower range.
To try: DropD (DADGBE)

Open formations

They are obtained when all the strings are tuned to the notes of a chord. Usually major or minor. They are called by the name of the chord. There is no clear connection between the name of the system and the system. For example, " open A major" is any tuning where there are open strings A, C# and E (and no others). It could be EEAAC And EAC#AC or even reduced AEAEAC#.

The most common options:

5-7-5-4-3

Open G	DGDGBD	Rolling Stones in "Brown Sugar" and "Start Me Up", Alter Bridge in "Watch Over You"
Open A:	EEAAC	Led Zeppelin in "In My Time of Dying", White Stripes in "Seven Nation Army"
Open F:	CFCFAC	Led Zeppelin in "When the Levee Breaks"

7-5-4-3-5

Open D	DADF#AD	Joni Mitchell in Big Yellow Taxi
Open E	EBEG#BE	Derek Trucks

7-5-7-5-4

>

Open C	CGCGCE	Devin Townsend
Open B	BF#BF #BD #

To try: Open G, Open D, Open C

+ Suitable for playing with a slide
– They are friendly to one or two keys, can be very inconvenient in others, and are not always friendly with scale-like passages.

Modal scales

That's what they call it open formations, based on a chord that is not major or minor. Typically this is a sus2 or sus4 chord.

The most famous of them is the “Celtic tuning” (opened by Dsus4):

Standard option - DADGAD(Led Zeppelin in "Kashmir", Staind in "Epiphany"). Lowered versions of this tuning were used by Mark Tremonti in Creed and Alter Bridge, Russian Circles and Sevendust.

Drone formations

Tunings where all or almost all the strings are tuned to the same note (not necessarily the same octave).

DDDDDD- The Velvet Underground in "Venus In Furs"
BDDDDD- Goo Goo Dolls in "Iris"

+ Very different
– Very specific

"Seven-string without a sixth"

This is a standard tuning in which the sixth string is lowered not by a tone, as in drop tunings, but by 5 semitones. It turns out like a seven-string with a missing sixth string. And the fingering, which usually gives a fifth on the 5th and 6th strings, now gives an octave.

+ Fingerings can be moved anywhere on the fingerboard without having to adjust them. Complete symmetry.
– You'll have to forget about open chords and barre chords.
To try: EADGCF or D #BE (if you don’t want to tune the first and second strings higher)

Fifth scale (all Fifths)

Each next string is a fifth (7 semitones) higher than the previous one.

One of the main versions is CGDAEB. The lower C then turns out not too low for acoustics, but the upper B turns out to be very high - a fifth higher than the standard upper E. On a guitar with a standard scale and ordinary strings, this B is unattainable: the string will simply break before reaching it.
This guy from YouTube very carefully used thin string to get the top C.
A this one put it on classical guitar instead of the first string, fishing line with a cross section of 0.5 mm, in combination with five nylon strings from the regular kit.

The other extreme is to start with the standard high E and work fifths down from there. It will work out FCGDAE, the first string is as in standard tuning, and the sixth is almost an octave lower than the sixth in standard tuning. This is too low to produce clean notes on a standard scale guitar with this string. You will need a baritone or multi-scale guitar.

+ Complete symmetry, as in the fourth tuning. Huge range (almost an octave wider than standard tuning).
– You need a custom set of strings and a willingness to make compromises (or order an instrument with a multi-scale). You'll have to forget about small intervals and chords in which the notes are close to each other. Playing scales and melodies will require increased stretching.

By the way, a mandolin is tuned to fifth tuning ( GDAE), and that's it bowed instruments, except double bass: for example, violin in GDAE, and the cello in СGDA. In addition, there are four-string tenor guitars which have 4 strings and are tuned in fifth tuning CGDA.

"New Standard Tuning"

A tuning invented by Robert Fripp to solve the problem of the fifth tuning. He replaced the top fifth with a minor third, and it turned out CGDAEG. Upper Sol is also high, but already achievable. Can be used standard strings 9 or 10 gauge. But it’s better to assemble a custom kit.

"Nashville tuning"

-8 in the formula means that the 2nd string is tuned not higher than the third, but 8 semitones LOWER. “Nashville tuning” usually works out like this: we take a set of strings for a 12-string and put only the “thin” half of it on the 6-string, tuning it in the same way as on a 12-string. Now the first and second strings are tuned the same as in standard tuning, and all the others are tuned an octave higher. The result is a “ringing” tuning with a reduced range, in which some notes in the chords will be duplicated. This tuning is suitable for overdubs and any additional parts. For example, you can record the same chord part on a 6-string in standard tuning and the same chord in Nashville tuning. In essence, it turned out to be a 12-string, but the only difference is that this is not one performance, but two slightly different ones, which will give more volume, besides, these are two separate tracks and can be panned in different directions.

Double-drop tunings

They are obtained when in standard tuning they lower not only the sixth, but also the first string by a tone.

Double Drop D	DADGBD	Neil Young on "Cortez The Killer", Led Zeppelin on "Going To California"
Double Drop B	BF#BEG	Isis

To try: DADGBD. It's funny that this system is “one step away” from each of the three above - DropD (DADGBE), Open G (DGDGBD) and DADGAD.

Now about the seven-string guitar.

The standard seven-string tuning is a six-string E standard plus a 7th string in B.

Seven string B standard	BEADGBE	Dream Theater in "Caught In A Web", Steve Vai in "Riddle", Joe Satriani in "Mind Storm", Fallujah
Seven string Bb standard	BbEbAbDbGbBbEb	Morbid Angel, early Meshuggah, Nevermore
Seven string A standard	ADGCFA	Fear Factory, Korn
Seven string Ab standard	AbDbGbBEAbDb	Deftones on "Hexagram"

Seven-string Drop tuning is a seven-string standard in which the seventh string is lowered a tone.

Seven-string DropA	AEADGBE	Suicide Silence, Whitechapel, later Scar Symmetry. Jazz guitarist George Van Eps, who played a seven-string electric guitar back in the 60s, also used this tuning.
Seven-string DropAb	AbEbAbDbGbBbEb	Periphery on seven-string songs
Seven-string DropG	GDGCFAD	Vildhjarta, Emmure
Seven-string DropF#	F#BEG#	Rivers Of Nihil, Deftones on Saturday Night Wrist album
Seven-string DropD	DADGCEA	Black Tongue

Some people take the six-string drop tuning and add a seventh string from the bottom. It can be a third lower:

Six-string DropD + low B	BDADGBE	Animals As Leaders in "Cafo"
Six-string Drop C# + low A#	A