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At this summer’s Pitchfork Music Festival there were a few precious moments that helped restore my faith in rock ‘n’ roll, and some of the best happened because an inexplicable scheduling decision had resulted in overlapping Sunday sets by Thee Oh Sees and Ty Segall—two like-minded acts with like-minded audiences. Thee Oh Sees started first, and their bizarre but magnetic front man, John Dwyer, hollered on mike at Segall, who was setting up across the park; once Segall started playing, the garage wunderkind commanded his crowd to yell “DWYER!” on the count of three (and Dwyer, who was done with his own set and listening from backstage, laughed along). The good-times vibes and camaraderie that both of these out-there songwriters exude onstage make it easy to understand why they’re so prolific: they aren’t just insanely good at what they do, they also enjoy the hell out of it. Segall has already released two records this year—a disjointed but stellar collaboration with White Fence called Hair and a full-band session called Slaughterhouse—and he’s dropping the solo album Twins on Drag City in October. On Thee Oh Sees’ new full-length, Putrifiers II (In the Red), Dwyer dials back the bounce with chilled-out, hanging-on-the-beach tracks that tap into his weird psychedelic tendencies. From the vintage hard-driving Oh Sees of “Wax Face” to album closer “Wicked Park,” which sounds like an acid trip in Swinging London, he commands the album with easy­going flair. Segall and Thee Oh Sees are coheadliners on this tour, and even if Segall doesn’t cover “Dirty Deeds Done Dirt Cheap” again, their Chicago stop is bound to be rowdier and more fun than pretty much any other show this fall. —Kevin Warwick Ty Segall headlines; Thee Oh Sees and Bare Mutants open. Fri 9/28, 7 and 10 PM, Logan Square Auditorium, $18, early show all-ages, late show 17+.

A$AP Rocky, Schoolboy Q, Danny Brown

Rap is currently experiencing a generational revolt, with relatively old-school artists like Jay-Z and Kanye finding themselves competing against rappers who’ve come up in the age of social networking, which has removed many of the genre’s stylistic constraints and helped to herald in an age of unprecedented experimentation. At this concert three of the most significant figures in the younger generation—all of whom have collaborated with one another—share a stage. A$AP Rocky is a New Yorker with a Houston rapper’s flow and star potential out the ass (and the cockiness that comes from knowing it). Schoolboy Q comes from hip-hop’s insurgent psychedelic fringe, with horrorcore-inspired lyrics and a penchant for rapping over pileups of weird synth sounds. Danny Brown is, well, Danny Brown—a sui generis performer out of Detroit who not only approaches beats from an oblique angle like Ol’ Dirty Bastard but also has the substance-­abuse habit and hairstyling philosophy to match. —Miles Raymer A$AP Rocky headlines; Schoolboy Q, Danny Brown, and the A$AP Mob open. Thu 10/11, 6 PM, Congress Theater, $35, all ages.

Crystal Castles, Health

A couple decades after rave culture swept Europe, the United States has finally caught the bug. Much of the credit for this goes to groups like Crystal Castles and Health, who nurtured a glow-stick-friendly underground that then trickled up, resulting in such fascinating phenomena as frat boys wearing face paint and “Drop Bass Not Bombs” T-shirts. Toronto’s Crystal Castles have been mixing ravey synths, eight-bit bleeps, and the goth-punk vocals of front woman Alice Glass since 2004. The recent single “Plague,” from their as-yet-­untitled third album (if history is any indication, it’ll probably be self-titled again), is more of the same, which sounds like a complaint but isn’t. Los Angeles band Health are noisier, with rock roots that come through more clearly, but their music still has enough of a tribal-rave feel to inspire a bit of liquid dancing. —Miles Raymer Fri 11/2, 6:30 PM, Congress Theater, $32.50, all ages.

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Fall Arts Calendar: An event for each of the season’s 80 days