I'm wondering if the following tuning can be used in a regular classical guitar

A3 E3 C3 G2 D2 A1

and if so, what set of strings could be used? I'm worried maybe the tension would be too much, but that also depends on the type of string. I have to say that I'm also planning to make this guitar fretless so the size of the frets will not be important, obviously.


Looks like you’re going for a classical guitar version of a baritone guitar, which are electric steel strings, have a longer scale length and are usually tuned a 4th or sometimes a 5th lower than a regular guitar.

It seems like you can take a regular set of strings but offset them by 1 position so the 2nd string would be where the 1st goes, etc. They would be tuned about a step lower than they normally would, A instead of B, E instead of G, C instead of D, etc. so maybe a high tension set might work better.

The problem is finding a string to serve as your low A. Maybe from a Mexican Guitarrón or Bajo Sexto? I’m not sure if the latter uses nylon or steel strings. The other issue is because of the short scale length the lowest string might not have a very good sound.

Like you mentioned, I would also be concerned about stressing the instrument so if you have a less expensive guitar you wouldn’t mind experimenting with that would be the way to go.

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  • Also the intonation will be put out, although that won't be too problematic going fretless - but the fretlines will be red herrings. – Tim Apr 9 at 6:32
  • There are baritone classical guitars too. The Guitar family has something around 7 sizes (100 years before electrics). – ggcg Apr 10 at 14:30

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