Ah, yes, of course. Just as Derrek guessed. I really appreciate your help, Zuill. Thanks. :-)

Got it. You've helped a lot. One more thing though. Why was it that some of the chords sounded and some didn't before the change to the guitar (or piano or whatever)?

Ok. What dropdown list?

Excellent. Thank you. So...how did you change the chord playback instrument to guitar? What instrument was it set to before? And why didn't it work before? Is it easy to just set it to a piano?

Of course. Chrome. Should have thought of that. I've uploaded the file. Start playback at Rehearsal "D" and you'll note the chords play until the Bb and C chords. Later the A doesn't play either.