Jo Burt (born 1956) is an English rock bassist, guitar player, songwriter and vocalist. He is possibly best known for being the bassist for Black Sabbath during their 1987 tour in support of the album The Eternal Idol. He left the band after the tour ended.Jo Burt was also a founding member of Sector 27 with Tom Robinson - and a member of Virginia Wolf with Jason Bonham. Burt also appears on Freddie Mercury's solo album, Mr.