Complex sentence: Jethro Tull were a British rock group, formed in Luton, Bedfordshire, in December 1967, initially playing experimental blues rock, they later incorporated elements of classical music, folk music, jazz, hard rock and art rock into their music.
Split into simpler sentences: Jethro Tull were a British rock group, formed in Luton, Bedfordshire, in December 1967. Initially playing experimental blues rock, they later incorporated elements of classical music, folk music, jazz, hard rock and art rock into their music.