k-os, Atlantis: Hymns For Disco

A Canadian Jehovah's Witness who apologises to God for "bending laws of morality for the sake of attention and communication", Kheaven "k-os" Brereton is not your average rhymesmith. His ambition reaches full bloom on his third album, a messy, questing record steeped in jazz, reggae, rock and patchouli philosophy. Like other blueprint-shredding hip-hop records, including Cee-Lo Green and his Perfect Imperfections and Common's Electric Circus, the thirst for change is thrilling but the results spotty. Valhalla and Born to Run (no, not that one) shade so far into indie-rock that you can see why k-os's thank-you list prioritises Cat Power and Broken Social Scene over fellow rappers, and he sings as often as he raps, most successfully on The Rain's string-decorated 60s soul. But when the toughest, most immediate rap tune, Electrik Heat - The Seekwill, outshines many of the experiments, it's a warning that he shuns hip-hop at his peril.