2017 collection. Jethro Tull is a British rock group, formed in Luton, Bedfordshire, in December 1967. Initially playing blues rock, the band soon developed it's sound to incorporate elements of British folk music and hard rock to forge a progressive rock signature. Jethro Tull has sold over 60 million albums worldwide, with 11 gold and five platinum albums among them. Includes the tracks "Living In The Past," "Locomotive Breath," "Aqualung" and more.