Did someone mention Chicago's The Green Mill Tavern?

[jazzboCR]

Yes. Me...because it is a premier spot in a major city. And going by the goodly number of live perfs, very artist-friendly. Here's 3 who've starred there:
Clyde Stubblefield James Brown's fave drummer--the original "funky drummer"--is the skins in a group called the B3 Bombers. 1 CD and the review tightens you up: http://www.allmusic.com/album/live-at-th...0000233913 A Site--Mr Stubblefield may be the best known but he's not the leader: http://dantrudell.com/b3bombers.html
Some tunes: https://www.youtube.com/watch?v=k7IjMUW3sas << Cogent uploader's comments--click "See More"
The leader Dan Trudell also works the 88's in another group: https://www.youtube.com/watch?v=d-87qNz67ng and https://www.youtube.com/watch?v=tUfMa8s4j-Q << Same gig
Back on the B-3: https://www.youtube.com/watch?v=WdNA7FO-uXY

[jazzboCR]

Another group with a steady gig there is a 13-piece horn-driven big band, Nu-Skool variety. Chicago Yestet Not much on them but CDs can be got here: http://chicagoyestet.com/ Rollicking band as you'll see.

Some tunes--darn near everything about this band is intriguing: https://www.youtube.com/watch?v=Oopnf5Amhjk
https://www.youtube.com/watch?v=q7WrATAetPU
https://www.youtube.com/watch?v=bhk3DAaXvXo << A Beatles song taken a different way
https://www.youtube.com/watch?v=Xri4I2qYcBs << A more conventional approach, with a terrif vocal