Pavanne

A much more subtle problem is to ensure that not only are the chords generated within the playable range of the instrument, but that they are within the capability of the player to be able to play them - I can stretch (or used to be able) an octave + 3rd on the piano, a couple of octaves on some piano accordions with smaller spaced keyboards, and while not a guitar player, it is obvious that there is only a limited spread of frets (but you can include open strings!) that a human hand could cover simultaneously (like a violin 'position') - ie if you are at the guitar 12th fret, I doubt if normal human fingers will reach back to the 2nd fret at the same time!

:-)
Robin