[guajeo]

It is usually only done with steel strings, but I think it would be possible with nylon as well. Has anyone here tried it?

In Nashville or high-strung tuning, the first two notes are standard tuning E and B. The remaining four strings are also the standard notes, but an octave higher.

Of course to do that, one cannot use a regular string set. For strings 3-6 one has to use much thinner strings than usual, and only the 6th string is wound.

Of course, it would not work for playing classical repertoire, with the 3rd string sounding higher than the 1st, etc. But for strumming chords, it could bring a different sound.

Has anyone here tried it with nylon strings? If so, what gauges?

(It might be nice to tune all six strings an octave higher, but I doubt they make any strings so thin as to be able to tune string one an octave higher, except for on a tiny "octave guitar". I think that is why only strings 3-6 are tuned an octave up)