This is a very simple exercise for playing sixth-tones The audio file has undulations on three notes: (I picked these because they appear in a piece I am coaching.)

• Bb3 – Bb3 sixth-tone lower
• Db4 – Db4 sixth-tone lower
• C3 – C3 sixth-tone higher

All you have to do is practice at first playing with the undulations, then against them so when the audio plays Bb – you try to play Bb sixth-tone lower, and check yourself as the tone moves. Here is a crude display, you can imagine the audio as the black line, your sound as the blue line.

Tuning is A=441

Here is the audio file