What I mean is, you play four notes and when you play the next four notes the first four notes will sounds in between the current notes, like if you were playing eight notes.
Anyway, I have been messing around with such an idea using an real time effect program on my computer, and it can all end up very cool, and sound extreamly fast.
Well, just an idea, but I doubt something like that whould surprice the whole guitar playing scene
haha. 