People all seem to assume Nashville tuning is for electric and steel strung guitars, but I decided to try retuning a spare nylon strung guitar to Nashville tuning.

I used standard strings rearranged, so the low E is the fourth string tuned down to E from D, the fifth string is the old third string tuned down to A from G, and the new third string is a first string, tuned up from E to G.   Great fun to play, with a very bright sound. (I reckon the fact that two strings are tuned down a tone should compensate for the fact is is tuned up three frets, so far as strain on the neck is concerned.)

I gather a lot of African guitarists use high strung guitars, which is like Nashville tuning, but with the third string unaltered.

One of the good things about using funny tunings is that it helps to make it seem more justified