Led Zeppelin's "Led Zeppelin IV" and Jethro Tull's "Aqualung". It's prominently featured on Jethro Tull's "Aqualung" album. "Locomotive Breath" was released on Jethro Tull's 1971 album "Aqualung" in 1971. "Aqualung", "Aqua-Lung", and "Aqua Lung" are registered trademarks for scuba diving breathing equipment. The album features BT, Kirsty Hawkshaw, and Aqualung on vocals. "Brighter Than Sunshine" is an indie pop ballad written and performed by Aqualung. The pilot used an aqualung for breathing underwater. He also drummed on an album by Aqualung as well as being part of Shep. In the United States, U.S. Divers managed to keep "Aqualung" as a trademark. The lyrics convey a story of a homeless man named Aqualung. AllMusic's Bruce Eder called "Aqualung" "a bold statement" and "extremely profound". This type of breathing set is sometimes called an "aqualung". It is the fourth track from their album "Aqualung" which was released in 1971. "Elements" was released on May 6, 2014, and was produced by Matt Hales (a.k.a. Aqualung). This line-up recorded "Aqualung" in late 1970, releasing it in 1971.