Deep Purple is one of the most influential and important guitar bands in history, one of the godfathers of the heavy metal genre, with over 100 million album sales worldwide to their name. To celebrate the 40th anniversary of Deep Purple's groundbreaking double live album Made in Japan, this documentary explores these recordings and Deep Purple Mark 2, the line-up between 1969 and 1973.

• BBC Four
• Universal Music
• Ian Gillan
• Roger Glover
• Ritchie Blackmore
• Jon Lord
• Ian Paice
• Glenn Hughes
• Martin Birch
• Michael Bradford