Al, I did send a previous pic of unwanted breakout point, but here it is again. It breaks out just on the bend.
Bach on square waves is exactly what it says in the tin. The single notes should modulate OK but the chords will sound iffy I'm sure although my modulator can handle 2 notes.
The square wave Bach can be found here...….if you can bear listening
to a square wave rendition.
Only squares listen to square waves
https://www.youtube.com/watch?v=eN2VjU-BZ6E&t=58s
If you save it and run it on Audacity, you will see that all the notes are square waves, ideal for spark modulation. As I said, I tried it but I need more volts o/p to modulate my rig.
Happy sparks.