1. Harlem World, Apr. 21, 1981 Collection: Hip Hop Party and Event Flyers Location: 129 Lenox Ave. Harlem, Manhattan, New York, New York, United States (neighborhood) Date: 1981-04-21 1981-04-22 Format: Image Performer: Masterdon Committee (Masterdon Committee, Masterdon Death Committee, Masterdon Def Committee,early hip-hop group from 174th St., Harlem, Master Don, Pebbly Poo, Gangster G, Keith KC, Boo Ski, Johnny D), ... Promoter: Harlem World in Assoc. with the Ninth Wonder Prod.