this backing track is:
for Bass

it is in the key of:
Gm

arrangement:

4  bars bass and drums (intro)
4 bars with piano (intro continued)
Chorus Melody X 2  (16 bars)
Verse Melody (8 bars)
Chorus Melody X 1 (8 bars)
Solos  (32 bars) swing with walking bass
Verse Melody (8 bars)
Chorus Melody X2 (16 bars)
“…and don’t you come back no more” melody repeat X 5 ( to end)