Leon Calvert (26 June 1927 – 1 May 2018) was a British bebop jazz trumpeter, one of the co-founders of Club Eleven.
[3][4] In the 1960s Calvert began operating a jazz label at Lansdowne Studios with drummer Barry Morgan, Monty Babson and Jerry Allen.
[5] The studio was the location for recordings by notable artists and bands, including Joan Armatrading, Black Sabbath, The Cure, Donovan, Jethro Tull, the Kinks, Paul McCartney, Cat Stevens, Rod Stewart, UFO, Yes and many more.
[7] He can be heard on many Ken Moule and Dankworth recordings of this period, his style influenced by the early work of Miles Davis.
[9] He worked mostly as a freelance musician for radio, television (such as the in-house Top of the Pops orchestra led by Johnny Pearson, where he was lead trumpet for eight years)[2] and film (for instance, on the James Bond film You Only Live Twice with John Barry), and as a session musician in the recording studio.