California Jam 1974
The phenomenon of ''Rock Arena "was born with the California Jam 1974, with Deep Purple who were the epicenter. It can safely be considered the Woodstock of that generation for hard rock fans. The Jam took place in a warm and sunny spring day, April 6, 1974, the Ontario racetrack, before 250,000 people. He represented a baptism of fire for the new line up of the band, with frontman David Coverdale and bassist Glenn Hughes, who in '73 had replaced Ian Gillan and Roger Glover to form the so-called line-up Mk III, with Ritchie Blackmore, Ian Paice and Jon Lord.