On this set, classic Latin traditions are transformed to the brink of mutation, but their native elegance is left intact. On Latin Grooves, Funkanzazenji weave flamenco guitars and kora-like glissandi through sturdy colonnades of drum �n� bass. El Conjunto Massalia�s "Chan Chan" is based on a son by Compay Sungundo, but veers off into Steve Cropper guitar riffs and prurient Serge Gainsbourg-like vocals. "Yorulamento", by the German-based producer Supaton, mutates a stately charanga string section via reverberant synths and drum machines. Colombian rockers Los Aterciopelados, with their slap-happy montuno/house rhythms and whisky-voiced chanteuse, are silkily subversive, while Ozomatli�s "Cumbia De Los Muertos" grounds a Mexican cumbia with heavy hits of reggae and hip-hop. As with Putumayo�s Arabic Groove and World Lounge compilations, these tracks are postcards from the world music frontier, where mischievous, culturally promiscuous DJs are constantly inventing breathtaking new hybrids. --Christina Roden