Ian Gillan adding the then-seldom played "Maybe I'm a Leo" (named after Gillan's birth sign) and "When a Blind Man Cries" – the latter becoming a mainstay in the band's setlist ever since. He said that their first album with Morse, "Purpendicular", "was a such important record for Deep Purple that without that [other records] couldn't have been possible." He has remained Purple's lead singer, though the band has found more success touring than with producing records. Gillan pays particular interest to the lyrics in Deep Purple, and considers it his prime composing role within the band. Discussing the importance of lyrics,
Deep Purple periods between 1968 and 1969 with the line-up including Rod Evans (lead vocals) and Nick Simper (bass, backing vocals), between 1974 and 1976 with the line-up including David Coverdale (lead vocals) and Glenn Hughes (bass, vocals) (and Tommy Bolin replacing Blackmore in 1975), and between 1989 and 1992 with the line-up including Joe Lynn Turner (vocals). The band's line-up (currently including Ian Gillan, and guitarist Steve Morse from 1994) has been much more stable in recent years, although keyboardist Jon Lord's retirement from the band in 2002 (being succeeded by Don Airey) left Ian Paice as the only original Deep