You could literally see the changing of the cultural guard as the Orishas whipped through their set of rumba-steeped rap at Starfish this past November. In front of the stage was a sweaty mass of Cuban-American teens and twentysomethings, singing along with every verse. Back at the bar was a cluster of older Cuban exiles, curious to hear the latest spin on Afro-Cuban music and perhaps a bit bemused to catch some Buena Vista-styled samples cropping up between the Orishas' percussive beats. It's certainly true that the group isn't the cream of Havana's burgeoning hip-hop scene. (In fact since they now reside in Paris as Cuban expats, their current material seems to owe as much to the smooth strains of French rap as to any of their native island's musical currents.) And some of its choreographed dance moves invoked a bit too much of 'N Sync's slick vibe for comfort. But once the Orishas got over their microphone troubles, they definitely proved they could not only bring the noise but introduce Miami to yet another revolution bubbling over across the Florida Straits.