Thanks Noel, your help greatly appreciated.

Done - but there's a rhythmic glitch.

My rhythm is a shuffle (style _BTGSHUF.STY - Baritone Guitar Blues Shuffle).

Putting in a typical pattern (F F A# A C C D C, all 1/8 notes against an F chord), they don't quite align rhythmically. Is there a process where I can "swing" the input to be a better fit?

Gordon