Here's backing track number 3.
The changes are as follows:-
||: Am7 / / / | / / / / | Bbmaj7#5 / / / | / / / / | D7sus4 / / / | / / / / | C7#11 / / / | / / / / :||
Use A Dorian over the Am7 chord
Use Bb Lydian Augmented over the Bbmaj7#5 chord
Use D mixolydian over D7sus4 chord
Use C Lydian Dominant over the C7#11 chord
Try continuous scale exercises, motif playing and free improvisation.
Good luck!