A Plague of Lighthouse Keepers

"A Plague of Lighthouse Keepers" is a song by the English rock band Van der Graaf Generator, from their fourth album Pawn Hearts (1971). It is a concept piece over 23 minutes long, which comprises the whole B-side of the album. "A Plague of Lighthouse Keepers" evolved in the studio, recorded in small sections and pieced together during mixing. The song has many changes in time signature and key signature, and even incorporates some musique concrète.