OK Folks. Here is a revised revised version of the notes and backing tracks in both concert Eb minor and concert F minor.
The revised notes and the backing tracks have simpler chords for the improvisation section than my first attempt, so not as difficult. These are also, hopefully, the chords used by Mingus.
There are various versions of the backing chords, and I have taken the ones from @aldevis post above, which are almost, but not exactly the same as those I got from @rhysonsax . (The difference lies in which IV chords are major and which are minor.)
The backing tracks come both with and without a 2 bars of clicks at the beginning.
The form is:
2 bars of clicks in the "with clicks" tracks. (1,3,1,2,3,4)
4-bar intro (first bass alone, then with drums, then with piano)
Song once
Improv twice (The backing chords are different the second time)
Song once again
4-bar coda on the last note for you to embellish at will.
Tempo: 60bpm.
Band In a Box is sometimes great, and sometimes appalling. Today it was not in a collaborative mood.
🙁
Revised Concert Eb minor version
Revised Concert F version