The rapping is in Spanish; the music is from Puerto Rico, Macedonia and Nigeria; the sensibility is from Mars. Grammy-winning duo Calle 13 have no analogue in U.S. hip-hop: They're pop-savvy hitmakers with globe-trotting tastes and a riotous sense of humor. Here, they flaunt their cosmopolitanism, collaborating with Mexican rockers Café Tacuba ("No Hay Nadie Como Tu") and spicing their songs with Afro beats, polka and, on "Fiesta de Locos," Balkan brass. Spanish-speakers will love Residente's witty raps, but you don't need to know a word to grasp his message: a plea to bury geographic boundaries under an unstoppable groove.