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The secret’s out! According to Time Out Chicago’s music blog, the Beastie Boys are performing at Chicago’s Congress Theatre on Thursday, August 6, two days before their headlining slot at Lollapalooza on Saturday, August 8.

The show will begin at 6:30 p.m. and tickets go on sale to the general public this Friday, June 26, at 10 a.m. CST either at Frontgatetickets.com or in person with a reduced service charge at Site And Sound located at 2125 N Milwaukee.

UPDATE: So the presale is going on now. To purchase tickets today, go here and enter the presale password RAPPERS.