After his noise-rock band Calvin Krime broke up in the late '90s, Sean Tillman performed as Sean Na Na before that project ultimately transformed into his current persona. Before it became something of a trend, Tillman performed profane and sexually oriented R&B as a solo act called Har Mar Superstar. Generally performing all but nude and capitalizing on his passing resemblance to porn star Ron Jeremy, Tillman is a surprisingly lively and charismatic performer who seemingly has no shame or anachronistic body-image issues. With songs that are an unabashed mélange of hard disco, funk and hip-hop, Tillman comes off like a long-lost member of Kool & the Gang. A lot of artists take advantage of disco's kitsch, but Tillman's ultra-confident delivery makes it seem believable, exciting and relevant.