When an artist christens herself Gelli Haha and kicks off her debut album with a perky synth-pop number called “Funny Music,” it’s clear she’s not taking herself too seriously. And with Switcheroo, the LA singer born Angel Abaya successfully translates the irreverent theatrics and technicolor pageantry of her buzz-building live performances into an immersive play-at-home musical experience. Welcome to (as one track dubs it) the “Gelliverse,” an all-night party where the venue deploys every trick—dry ice, foam baths, confetti cannons—to amplify the sense of dance-floor delirium. “Spit” channels the indie-sleaziest 2000s electro with Yo Gabba Gabba!-level participatory exuberance; “Tiramisu” is jacked-up ’90s house spiked with Le Tigre attitude. Switcheroo is the sort of non-stop hit parade that offers nary a chance for a breather—but, in lieu of a bathroom break, Gelli delivers an extended NSFW monologue about urinating into a jar in front of her friends at a party (“Piss Artist”) without skipping a dirty-disco beat.