Aqualung is the fourth studio album by the British rock band Jethro Tull, released on 19 March 1971 by Chrysalis Records. Blending progressive rock, folk and hard rock, the album expands on the eclectic musical approaches explored on the band's previous albums by featuring riff-heavy rock songs alongside acoustic, singer-songwriter material placing greater emphasis on lead vocalist and primary songwriter Ian Anderson. Lyrically, the album addresses themes of religion and spirituality, alongside social issues such as homelessness and prostitution. Its prominent critique of organized religion led some critics to describe Aqualung as a concept album, a characterization the band has consistently denied. Recorded at Island Records' new recording studio in Basing Street, London, Aqualung was Jethro Tull's first album with keyboardist John Evan as a full-time member, their first with new bassist Jeffrey Hammond, and last featuring Clive Bunker on drums, who left the band shortly after the release of the album. From Wikipedia (https://en.wikipedia.org/wiki/Aqualun...) under Creative Commons Attribution CC-BY-SA 3.0 (https://creativecommons.org/licenses/...)