Rainbow are an English-American hard rock band originally from Hertford, Hertfordshire. Formed in January 1975 by then-Deep Purple guitarist Ritchie Blackmore, the original lineup of the group also included former Elf members Ronnie James Dio (lead vocals), Craig Gruber (bass), Gary Driscoll (drums) and Micky Lee Soule (keyboards), who recorded and released the self-titled album Ritchie Blackmore's Rainbow that year.[1] The most recent line-up consisted of Blackmore (the sole continuous member), backing vocalist Candice Night (since 1994), singer Ronnie Romero, bassist Bob Nouveau, drummer David Keith and keyboardist Jens Johansson (all since 2015).