Over the weekend, Beck and Dave Grohl headlined a Swing Left fundraiser on behalf of progressive candidate Aftab Pureval, who is running for Congress in Ohio. The intimate show took place in a concert goer’s backyard. Beck performed “Where It’s At” with Grohl on drums.

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This guy showed up! #Swingleft people!!

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The one-off supergroup also featured superstar producer Greg Kurstin (Adele, Foo Fighters, Sia, Tegan and Sara) and Inara George of The Bird and The Bee.