On Wednesday, September 1, the Jazz Institute of Chicago holds its 21st annual club tour from 6 PM to midnight. Promotional buttons (which include admission and transportation) can be purchased at the clubs for $15 in advance, or $20 the night of the event. Buses arrive outside each club every 15 minutes and travel three routes: North (Green Mill, Old Town School, Green Dolphin Street, Pops for Champagne), Central (Andy’s, Joe’s Be-Bop Cafe, Chicago Historical Society, Backroom, Jazz Showcase), and South (Cotton Club, Velvet Lounge, HotHouse, Buddy Guy’s Legends). Riders may transfer between routes at Green Dolphin Street, Andy’s, and Buddy Guy’s Legends. For more information see www.jazzinstituteofchicago.org or call 312-427-3400.

ANDY’S (11 E. Hubbard, 312-642-6805),

John Brumbach Quintet, Henry Johnson’s Organ Express.

BACKROOM (1007 N. Rush, 312-751-2433), Carlos Cannon.

BUDDY GUY’S LEGENDS (754 S. Wabash, 312-427-0333), Percy Strothers.

CHICAGO HISTORICAL SOCIETY (1601 N. Clark, 312-642-4600), Chevere.

COTTON CLUB (1710 S. Michigan, 312-341-9787), Midnight Sun.

GROON DOLPHIN STREET (2200 N. Ashland, 773-395-0066), Bill Porter Orchestra with Rich Fudoli.

GREEN MILL (4802 N. Broadway, 773-878-5552), Ted Sirota’s Rebel Souls, George Freeman Quartet.

HOTHOUSE (31 E. Balbo, 312-362-9707), Paul Wertico Trio, Andreas Kapsalis Trio.

JAZZ SHOWCASE (59 W. Grand, 312-670-2473), Ira Sullivan Quartet.

JOE’S BE-BOP CAFE & JAZZ EMPORIUM (Navy Pier, 600 E. Grand, 312-595-5299), John Kattke Trio.

OLD TOWN SCHOOL OF FOLK MUSIC (4544 N. Lincoln, 773-728-6000), Victor & Connie Parra’s Mambo Express (note: music starts at 8:30 PM).

POPS FOR CHAMPAGNE (2934 N. Sheffield, 773-472-1000), Jeannie Tanner & Ryan Cohan, Frank Russell Trio.

VELVET LOUNGE (2128 1/2 S. Indiana, 312-791-9050), Corey Wilkes.