Topic summary
Re-entrant tuning
Extracted from the Wikipedia article Reentrant tuning.
Ten-string guitar
The ten string classical guitar was originally designed for a specific re-entrant tuning invented by Narciso Yepes, now called the Modern tuning also. Both this and other re-entrant tunings, such as the Marlow tunings, are now used, as well as non re-entrant tunings such as the Baroque; nevertheless the advantage of the Yepes re-entrant tuning over the other tunings is that it provides sympathetic resonance over all the 12 notes of the scale while the rest do not. These tunings may also be used on related instruments, such as ten string electric and jazz guitars.