Jethro Tull are a British rock band formed in Blackpool, Lancashire, in 1967. Initially playing blues rock, the band later developed their sound to incorporate elements of hard and folk rock to forge a progressive rock signature. The band is led by vocalist/flautist/guitarist Ian Anderson, and has featured a revolving door of lineups through the years including significant members such as guitarists Mick Abrahams and Martin Barre, keyboardist John Evan, drummers Clive Bunker, Barriemore Barlow, and Doane Perry, and bassists Glenn Cornick, Jeffrey Hammond, John Glascock, and Dave Pegg.
The group first achieved commercial success in 1969, with the folk-tinged blues album Stand Up, which reached No. 1 in the UK, and they toured regularly in the UK and the US. Their musical style shifted in the direction of progressive rock with the albums Aqualung (1971), Thick as a Brick (1972) and A Passion Play (1973), and shifted again to hard rock mixed with folk rock with Songs from the Wood (1977) and Heavy Horses (1978). Jethro Tull have sold an estimated 60 million albums worldwide, with 11 gold and five platinum albums among them. They have been described by Rolling Stone as "one of the most commercially successful and eccentric progressive rock bands".
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