This musical biography tells the story of the making of Deep Purple's classic album "Machine Head. Exclusive interviews with Ritchie Blackmore, Ian Gillan, Roger Glover, John Lord and Ian Paice take us through a track by track making of the album. The performers demonstrate riffs & licks from the songs and explain the genesis of the songwriting. Also included are featured songs, archive footage of Deep Purple in concert, including American footage of "Smoke on the Water" and "Space Truckin'", TV performances and promotional videos, more.

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Ritchie Blackmore

Ian Gillan

Roger Glover

Jon Lord

Ian Paice