This is one of my first compositions from the late 1970’s.  In the late 1990’s I created this big band chart.  This chart really swings.  The blowing changes begin with a Cmi7 – F7 vamp and then proceed through a series of chromatic harmonies that end on a Gbmaj7 chord. A bit challenging for beginners but definitely fun.  If the ranges are too high you can move everything down an octave when necessary. There is a challenging sax soli section that is really fun to play.