"Can I keep it gangsta tonight?" Ice Cube asked as he took the stage Saturday at Coachella. Yes, please, the crowd responded. And so he did -- for about half his show. Going into the festival, the West Coast rap pioneer was widely expected to reunite the living members of his seminal late-'80s group, N.W.A, whose story was dramatized in last year's hit biopic "Straight Outta Compton." Earlier this month, the outfit -- featuring Ice Cube, Dr. Dre, MC Ren, DJ Yella and the late Eazy-E (who died in 1995) -- was even inducted into the Rock and Roll Hall of Fame.