Hey Ma, Cam’ron's playing at B.B. King Blues Club, 237 W. 42nd St. (betw. 7th & 8th Aves.), 212-997-4144; 8, $26
Providing there aren't, um, explosions in the sky, you can catch Explosions in the Sky, Constantines and Castanets at Central Park SummerStage Rumsey Playfield, E. 72nd St. at 5th Ave., 212-360-2756; 5:30, $25
Or party hard with Narcissister and Andrew W.K. (as DJ) at Santos Party House (96 Lafayette St., at Walker St.), 212-584-5494; 7:30; $15.





