Ozomatli

If Street Signs proves anything, it's that politics and partying aren't antithetical, Middle Eastern percussion is cool, and Ozomatli are evolving. Period. Ozo alum Chali 2na tears it up on "Who's To Blame," guests Hassan Hakmoun and Eddie Palmieri bring serious skills, and you should hear "Saturday Night" right now.

In which the agitating L.A. salsa-rap collective vanquishes the tendency of rock en español's constituent parts to stick out like tree roots or TV antennas. Arab sounds from Hassan Hakmoun to dancehall diwali articulate Hispanic music's Moorishness when we need it most, yet fit right in, and the horns on "Déjame en Paz" could be ska or some Mexican ur-polka. Everything jumps, which makes the Iberian romanticism of the closing "Cuando Canto" easier to take--though it helps that, as usual with these guys, the romanticism has a political purpose, which starts with their people and radiates outward. (Grade - A-)