A purple prism blasts through the smoke as Robyn blares through the speakers. There's a looming line outside, and inside the dance floor is densely populated. This is Dance Yourself Clean, an indie electro-pop dance party that originated in Seattle and has spread to Portland and LA. Though I personally prefer my dancing to be dirty, there are hidden gems in the "clean" set, if Chvrches, Phantogram, and Charli XCX beckon you to the dance floor. The music transitions from pop favorites from the last decade to songs made of piercing noises, but the party's cool laser lights might be the best part. ROSE FINN