It was all a dream -- Back in the day: '80s solo rap -- It's a G(roup) thang: '80s group rap -- Big timers: '90s solo rap -- All together now: '90s Rap groups -- West side story: West Coast Rap -- Heavy hitters: 2000s solo rap -- Where's the beef -- Divalicious: '90s female R&B -- Baby makin' music: '90s male R&B -- Family affair: '90s R&B groups -- Ladies first: 2000s female R&B -- New Jacks: 2000s male R&B -- You know you've got soul: Neo-soul -- Drop the beat: Producers -- It's all about the Benjamins: Moguls -- From Hollis to Hollywood: Hip-hop & Hollywood.