Few would deny that Deep Purple were one of the most influential and popular heavy rock bands to emerge from the melting pot of the late '60s. They went through several line-up changes, and stylistic shifts, before splitting up for the first time in the mid 1970s. Talismanic guitarist Ritchie Blackmore carried the spirit on when he formed Rainbow after leaving Purple in 1975, particularly through his partnership with legendary singer Ronnie James...