Led Zeppelin, the British rock band formed in 1968, functioned collectively as composers with primary songwriting contributions from guitarist Jimmy Page and vocalist Robert Plant. The band's catalog, spanning 1968 to 1980, blended original material with adaptations of blues and folk traditions. Their most enduring compositions include "Stairway to Heaven," along with "Black Dog" and "Rock and Roll," demonstrating Page's architectural approach to riff construction and Plant's mythological lyricism. The songwriting drew on blues sources, leading to later credit revisions acknowledging influences from Willie Dixon and others. The quartet of Page, Plant, bassist John Paul Jones, and drummer John Bonham left behind a compact but enormously influential body of work.