My challenge is how to hit the two octave jump from Bb in Kummer 66.  My pitch memory seems shakier.  The only idea I have right now is as follows

1) Work on my scales, listening for each tonic

2) Work on arpeggios – again.listening for the Bb.

3) Try Do-So-Do-So-Do

4) Try the octaves by themselves.

Another possibility is to draft my son into playing an F drone or Bb for me.  For reasons I don’t quite understand, I don’t do well when I set my tuner as the drone.

Any other ideas for exercise creation?