"When the Music's Over" is an extended psychedelic rock composition credited to all four members of The Doors: Jim Morrison, Robby Krieger, Ray Manzarek, and John Densmore. Written in 1967 for their second album Strange Days, the piece stretches past eleven minutes and unfolds through a five-part structure that loops back to its opening themes rather than following conventional verse-chorus form. The composition is built on a brooding, hypnotic riff rooted in E minor with Dorian modal inflections, creating a trance-like foundation through a plagal cadence that recurs throughout. Morrison's vocal delivery ranges from spoken narration to anguished peaks, threading together themes of psychedelic revelation, ecstatic abandon, and an early rock-era critique of environmental destruction in the "What have they done to the earth?" passage. Manzarek's organ introduction draws from the rhythmic pulse of Herbie Hancock's "Watermelon Man," setting an insistent groove before the piece moves through episodes of mounting intensity and release. The guitar solo section sustains harmonic stasis over dozens of bars, emphasizing modal ambiguity and atmospheric tension over resolution. The song's opening line originated from a remark by the owner of the London Fog club in Los Angeles, where the band had played late-night sets. Within The Doors' catalog, it bridges their shorter radio work with longer theatrical pieces, standing as one of their most ambitious compositions.