Jethro Tull - Locomotive Breath (Sight And Sound In Concert, 19th Feb, 1977) “Locomotive Breath” is a song by British progressive rock band Jethro Tull from their 1971 album, Aqualung. Written as a comment on population growth, “Locomotive Breath” was meant to replicate the chugging rhythm of a train. Lyrically, “Locomotive Breath” was inspired by Anderson’s concern regarding overpopulation. He explained, “It was my first song that was perhaps on a topic that would be a little more appropriate t