You know a rap group is openly courting an indie rock audience when they build their beats around samples from the likes of MGMT, Passion Pit and Sufjan Stevens. Whether the gimmick is borne of giddy appreciation or crass exploitation, it's working. "Opposite of Adults," Chiddy Bang's "Kids"-sampling breakthrough single, captured my attention and my imagination in short order.

You know a rap group is openly courting an indie rock audience when they build their beats around samples from the likes of MGMT, Passion Pit and Sufjan Stevens. Whether the gimmick is borne of giddy appreciation or crass exploitation, it's working. "Opposite of Adults," Chiddy Bang's "Kids"-sampling breakthrough single, captured my attention and my imagination in short order.

Factor in raps that incorporate elements of hipster-friendly emcees like Wale, Slug and Lupe Fiasco, and you've got a formula for success that might last when the novelty wears off.