This is the legendary fourth studio album by the English rock band Led Zeppelin, originally released in November 1971. The album is famous for having no official title and no band name on the original cover, a move intended to let the music speak for itself. It was recorded primarily at Headley Grange using the Rolling Stones Mobile Studio, providing the unique, heavy drum sound most notable on "When the Levee Breaks." The album features "Stairway to Heaven," a track that, despite never being released as a single, became the most requested song on FM radio in the 1970s.