April (2000 Remaster) · Deep Purple Deep Purple ℗ 1969, 1999 Purpletuity Limited under exclusive licence to Parlophone Records Ltd, a Warner Music Group Company Engineer: Barry Ainsworth Mixing Engineer: Derek Lawrence Producer: Derek Lawrence Drums, Percussion: Ian Paice Strings Arranger: Jon Lord Harpsichord, Piano: Jon Lord Hammond Organ: Jon Lord Background Vocals: Jon Lord Bass Guitar: Nick Simper Background Vocals: Nick Simper Remastering Engineer: Peter Mew Guitar: Ritchie Blackmore Lead Vocals: Rod Evans Writer: Jon Lord Writer: Ritchie Blackmore