More than a decade ago, Sean Tillmann decided to leave behind indie guitar rock for a more crowd-pleasing, sex-charged version of R&B. And performing, often shirtless, as the dynamic Har Mar Superstar, he found a newer, bigger audience. Since then, he’s moved from Minnesota to New York City and hit the road with bands like the Strokes, Father John Misty and Yeah Yeah Yeahs. Har Mar Superstar (above, doing one of the year’s top singles, “Lady You Shot Me”) put out his most acclaimed album, Bye Bye 17 (stream it below), this past spring, and after performing across Europe, he returns home to host the Obnoxiously Non-Denominational Holiday Party tonight at The Bowery Ballroom. And since it is a fiesta, Har Mar has guests: Lizzo, Computer Magic, See Through and DJ Jenny Eliscu.