Black Market is the title track from the 1976 album by Weather Report and was composed by Joe Zawinul.
Over the years I have transcribed most of the parts and I have now put them together as a Reggae track complete with a dub section and the thunderstorm at the end.
An Earlier version on YouTube
https://www.youtube.com/watch?v=sfe7soyzKTI

Album Art – Most pictures of Joe Zawinul show him wearing a cap like this.