Jazz Members Big Band (of Chicago) with 1992' Diggin' In (with lossless)

 

They actually made a few records back in the 80s to 90s but I found this mostly because I was searching for the remarkable composition called 19 Before Soc's Last Cup, quite the mini masterpiece indeed like Jacob's Tailor from long ago.  Have a listen if you haven't heard it before:

Btw, what is a soc? I'm a bit confused as is wikipedia here.  This was written by percussionist Glenn Cronkhite who was in Art Lande's Rubisa Patrol.

Unfortunately the rest of the album is quite generic big band, it's a surprise they included such a progressive item in there.