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Gangsta rap is a kind of hip hop, most importantly characterized by a lyrical focus on macho sexuality, physicality and a dangerous, criminal image. Though the origins of gangsta rap can be traced back to the mid-1980s raps of Philadelphia's Schoolly D and the West Coast's Ice-T, the style is usually said to have begun in the Los Angeles and Oakland area, where Too Short, N.W.A and others found their fame. This West Coast rap scene spawned the early 1990s G-funk sound, which paired gangsta rap lyrics with a thick and hazy tone, often relying on samples from 1970s P-funk; the best-known proponents of this sound were the breakthrough rappers Dr. Dre and Snoop Doggy Dogg.