If you shuffle the clock (let's say on 1/2 notes) how does the receiver interpret this It'll interpret it as a tempo change - not as 'shuffle' - it has no way of knowing that it's the same tempo with shuffle. What does it do between the 2 different 'tempos' Smoothly change tempo from one to another It can't do this until it's receives the next clock pulse. If the incoming clock move smoothly between the 2 'tempos' it'll swing everything, not just the offbeats. How would you shuffle just the 8th notes but not 16ths - can't be done with a simple clock.