Maybe you’ve heard of a band called Radiohead. And maybe you’ve heard about how their songs transcend genre, or something-a fact that this ambitious little Rapster comp aims to prove with Radiohead covers from folks like RJD2 and Pete Kuzma. But for every impressive Shawn Lee rendition of “No Surprises” or stunning Bad Plus version of “Karma Police,” there’s a snoozer like Sa-Ra All Stars’ limp “In Limbo.” At times, it just seems impossible to get past the novelty of the affair, but Phantom Planet fellas Mark Ronson and Alex Greenwald’s funky take on “Just” almost makes up for the disc’s glaring missteps.