41.4Level 1 — bass riff only

Use a simple practice cell:

B♭ – D♭ – E♭ – E – F

Set it rhythmically.

For example:

B♭ on 1 D♭ on 2e E♭ on 2& E on 3a F on 4

This is only a practice pattern, not a transcription.

Loop it.