Hey, Bob, thx! That's awesome. Only little bit I'd say is that to pause play in order to edit the chord voicing, I have to press the large chord diagram & then let go - if I press & hold, the player just keeps going. A little tricky when there are 2 chords in a measure (or more!), but slowing down the tempo can take care of that.

Thx for the help, this was just was I was looking for!