Jethro Tull is a British rock band formed in Blackpool, Lancashire in 1967. Led by Ian Anderson, known for his distinctive flute playing and acoustic guitar, the band began with roots in blues rock and jazz fusion before pioneering a unique mix of progressive rock, English folk, hard rock, and classical music. Over the years, Jethro Tull has featured many notable musicians, with guitarist Martin Barre being the most prominent alongside Anderson. Their breakthrough came with the 1969 album Stand Up, which topped the UK charts, followed by a string of successful releases including Aqualung, their best-selling album. Throughout the 1970s and 1980s, the band's sound evolved from progressive to folk and then to electronic rock, with Crest of a Knave earning them a Grammy Award in 1987. Jethro Tull has sold around sixty million albums worldwide, earning gold and platinum status for many of their records. Known for their eclectic and innovative style, they are considered one of the leading acts in progressive rock. Although the band ceased studio work in the 2000s and briefly split, Ian Anderson revived Jethro Tull in 2017 and continues to release new music with a refreshed lineup.