1984 – Ian Gillan leaves Black Sabbath.
Ian Gillan (born 19 August 1945 in Hounslow, London), is an English rock music vocalist best known as the lead singer for Deep Purple. During his career Gillan had a year-long stint as the vocalist for Black Sabbath and sang the role of Jesus Christ in the original recording of Andrew Lloyd Webber’s rock opera Jesus Christ Superstar. Gillan is considered to be one of the foremost rock vocalists, who introduced into rock music the vocal belting technique. In his prime he possessed a very wide vocal range, extending from E2 to C6. His work with Deep Purple is particularly recognisable for its occasional high-pitched screams and falsettos.