Dubstep is a genre of electronic dance music that originated in south London, influenced heavily by the drum and bass and UK garage scenes. Its overall sound has been described as "tightly coiled productions with overwhelming bass lines and reverberant drum patterns, clipped samples, and occasional vocals". Dubstep rhythms are usually syncopated, and often shuffled or incorporating tuplets. The tempo is nearly always in the range of 138-142 beats per minute, with a clap or snare usually inserted every third beat in a bar.