D'Addario EJ Phosphor Bronze Acoustic Guitar Strings EJ17 Medium 13-56
13 String Guitar Improvisation - YouTube
Classical guitar with additional strings - Wikipedia
After 13 years of classical guitar, i finally got a 10-string from 1985 Japan, and it is magical, the cathedral effect is epic and the very low and clear 4 bass notes
LUCIO NÚÑEZ Sophia 13-String Classical Harp Guitar, Spruce/Ziricote, w/Custom Case, Extremely Rare!! | Reverb
LUCIO NÚÑEZ Sophia 13-String Classical Harp Guitar, Spruce/Ziricote, w/Custom Case, Extremely Rare!! | Reverb