Wahey it works a treat.
Here is an initial experiment where I have a major scale running down the keys on the right, with the same scale but an octave lower on the keys on the left:
[elbows]
; I dont know what to call this
intervals=0 2 4 5 -12 -10 -8 -7 7 9 11 12 -5 -3 -1 0