the best hard rock of the era". Track listing Personnel Deep Purple Ritchie Blackmore – guitar Ian Gillan – vocals Roger Glover – bass Jon Lord – keyboards Ian Paice – drums, percussion Additional personnel Produced by Deep Purple Martin Birch – engineer Jeremy Gee, Nick Watterton – Rolling Stones Mobile Unit operators Ian Paice and Roger Glover – mixing Ian Hansford, Rob Cooksey, Colin Hart, Ron Quinton – equipment Roger Glover and John Coletta – cover design Peter Denenberg with Roger Glover – bonus tracks remixing (2000 edition) Peter Mew – remastering (original album tracks) and mastering (bonus tracks) at Abbey Road Studios, London (2000 edition) Charts Album Weekly charts Year-end charts Singles Certifications and sales References 1973 albums Deep Purple albums Warner Records albums Purple Records albums EMI Records albums