well I know how to play piano, guitar bass, drums/percussion and a bunch of misc instruments but I think it really depends more on how they are played then on how often they are played by the masses.
for example I tend to play either classical or my own pieces on guitar because I find a majority of modern music to be lack luster and un-original
I also have really big hands so I find it to be really great practice to learn Nobuo Uematsu's songs on guitar, such as Ami from FFVIII, although a lot of his work would be impossible on guitar and are only possible for me because I have monsterous hands haha
anyway I just want to say to L. Sprio that this is exceptionally beautiful little performance!
