Worked on the machine for a bit, mostly now I am trying to clean up some timing issues with linuxcnc. G93 sets the machine to inverse time feed mode, which should allow me to complete moves in a known time. Unfortunately at really high feed rates the machine falls behind and as a result it loses the tempo. Which is okay for single track songs like the above, but on more complex pieces I have to record the song in multiple parts and overlay the recordings. As a solution I am looking at breaking up my songs by level (so lower keys  on one track, and uppers on the next), vertical moves really slow the works down.