"Pump Up the Volume" is the only single by British recording act M|A|R|R|S. Recorded and released in 1987, it was a number-one hit in many countries and is regarded as a significant milestone in the development of British acid house music and music sampling. The song derives its title directly from a lyrical sample from "I Know You Got Soul", a hit single by labelmates, Eric B. & Rakim, released only months prior in that same year.