The thrill of seeing one’s favorite musicians in concert often alleviates the stress of modern life and the sweaty delirium from contracting Beatlemania. Enjoy an aural antidote with this deal to a North Coast Music Festival official after-party featuring Girl Talk and Zion I at Congress Theater. For $20, you get one general-admission ticket on Friday, August 31, at 9:30 p.m. (up to a $35.62 value, including all fees).

Known to fans as Girl Talk, Gregg Gillis collages pop and rap samples into new songs that have engendered countless epic dance parties and praise from Rolling Stone. Although scheduled to play the North Coast Music Festival on Saturday, September 1, Gillis takes the Congress Theater’s stage the night before, luring listeners into a web of laptop-fueled revelry with juicy pop hooks. His set will likely include tracks from 2010’s All Day, an album built from snippets of tunes by Jay-Z, U2, Daft Punk, and hundreds of other artists. Swathed in party paraphernalia such as confetti and toilet-paper streamers, each live show is wilder than a trip to a petting zoo stocked entirely with grizzly bears. Opening hip-hop duo Zion I furthers the kaleidoscopic nature of the evening by mixing trip-hop beats with spiritually charged lyrics.

Crowd members get to dance and thrash amidst the historic confines of the Congress Theater. A former movie palace built in 1927, the cavernous venue is registered as a Chicago Landmark, sheltering fans under an intricate, domed ceiling that’s perfect for jetpack escapes when the party gets too crowded.