– lead vocals Ritchie Blackmore – guitars Nick Simper – bass, backing vocals Jon Lord – Hammond organ, piano, harpsichord, backing vocals, strings arrangement on "April" Ian Paice – drums, percussion Production Derek Lawrence – producer, mixing Barry Ainsworth – engineer Peter Mew – restoring and remastering at Abbey Road Studios, London (2000) Notes References External links Deep Purple lyrics Deep Purple albums 1969 albums Albums produced by Derek Lawrence Tetragrammaton Records albums Harvest Records albums Polydor Records albums