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Brian Jones is a member of the 27 club -- rock stars like Hendrix, Morrison, Joplin and Cobain who died at that young age.
TROUBLED GENIUS: Mick and Keith got plenty of press for their shenanigans, but the wildest Rolling Stone was Brian Jones, the founder and original leader who died mysteriously at age 27. Signal Ensemble Theatre premieres "Aftermath," a play that delves into Jones' impact on rock n' roll, his sexual escapades, high profile relationships and drug induced arrests. If you miss it tonight, the play runs through June 6. 7:30 p.m., Raven Theatre Complex, 6157 N. Clark St, $20
RED ALERT: Crimson Lounge drops the oont-oontz-oontz for a couple of days a week, launching Jazz Nights on Mondays and Wednesdays through June. Local jazz vocalist Erin McDougald and her band performs, but keep your eyes open for special guests each night. 6:30 - 9:30 p.m., 333 North Dearborn St
WORK IT OUT: Spend your lunch hour on Daley Plaza and start working on that bikini body at this large-scale fitness rally with exercise tips from local trainers. Get down with various dance, yoga and step classes and find information on where to get fit in Chicago. 11 a.m. - 1 p.m., 50 W. Washington St. FREE