A Tribe Called Quest :
Without question the most intelligent, artistic rap group during the 1990s, A Tribe Called Quest -started and perfected hip-hop alternatives to hardcore and gangsta rap. They abandoned the macho posturing, and focused instead on abstract philosophy and message tracks.
Leaders of the New School:
NY, rappers MC Charlie Brown, MC Dinco D, MC Busta Rhymes, and Cut Monitor Milo issued A Future Without a Past for Elektra in 1991 as Leaders of the New School. They combined Afrocentric message tracks with novelty throwaways, and got a little attention for "Teachers, Don't Teach Us Nonsense." They followed it with T.I.M.E. in 1993