On this episode, we talk about a band named after the inventor of the seed drill, Jethro Tull, and perhaps the band's best-known album Aqualung,  which happens to be the name of the underwater breathing apparatus invented by Jacques Cousteau.  Why Aqualung? Who knows. But there's plenty of other stuff discussed in this episode, such as the band's charismatic flute-wielding leader, the all-around excellent musicianship, and the always thought-provoking  (and often difficult  ) themes of this album (human worth and organized religion).