Bob Dylan will be touring with The Band for the first time since 1966. Led Zeppelin launches their own record label, Swan Song. The first Knebworth Festival, held in Hertfordshire, England, was headlined by the Allman Brothers and attracted 60,000 fans. In the United States, California Jam attracts more than 300,000 fans to headliners such as Deep Purple, Emerson, Lake & Palmer, and Black Sabbath. Mama Cass Elliot dies in her sleep in London at the age of 32. Guitarist Mick Taylor has left the Rolling Stones after six years. John Lennon joined Elton John on stage in New York to perform three songs, including a cover of John's ``Lucy in the Sky with Diamonds.''