Hip Hop/R&B

A music genre consisting of a stylized rhythmic music that commonly accompanies rapping, a rhythmic and rhyming speech that is chanted. While often used to refer to rapping, "hip hop" more properly denotes the practice of the entire subculture. It developed as part of hip hop culture, a subculture defined by four key stylistic elements: MCing/rapping, DJing/scratching, break dancing, and graffiti writing. Other elements include sampling (or synthesis), and beatboxing. R&B is a music genre that combines elements of old-school rhythm and blues, pop, soul, funk, and hip hop. R&B has a polished record production style, drum machine-backed rhythms, an occasional saxophone-laced beat to give a jazz feel (mostly common in contemporary R&B songs prior to the year 1995), and a smooth, lush style of vocal arrangement. Electronic influences are becoming an increasing trend, and the use of hip hop or dance-inspired beats are typical, although the roughness and grit inherent in hip hop may be reduced and smoothed out.

Associated Sub-Genres: Old School, New School, Golden Age, Alternative Hip Hop, Chopped And Screwed, Chopper, Crunk, Crunkcore, Freestyle Rap, Gangsta Rap, Ghettotech, Hardcore Hip Hop, Horrorcore, Hyphy, Low Bap, Mafioso Rap, Nerdcore Hip Hop, Political Hip Hop, New Jack Swing, Reggaeton, Trap, Turntablism, Undergroup Hip Hop, East Coast Hip Hop, Midwest Hip Hop, Southern Hip Hop, West Coast Hip Hop

Source 1: http://en.wikipedia.org/wiki/Hip_hop_music
Source 2: http://en.wikipedia.org/wiki/Contemporary_R%26B