Carl's Space

I wonder how Jaco Pastorius composed “The Chicken”.  Was he conforming to the horns by writing it in Bb?  It’s definitely an interesting chord progression when you think about it.  

It’s funky.

Here’s the chord progression:

Bb x4 - the tonic

Eb x2 - the 4th

D, G - then the major 3rd, and the major 6th to Bb (also the 4th of D)

C x4 - the 2nd of Bbmajor, the 4th of Gmajor, and then back to 

Bb

Bb, Ab, F, Eb, C#, Bb, Ab…..Bb