Back in 1975 DEEP PURPLE MK III were playing their final shows, with the majority of the band and the audience not even knowing. Ritchie Blackmore, unsatisfied with most tracks on the latest DEEP PURPLE album "Stormbringer" collaborated with singer Ronnie James Dio to record a solo single (which grew to an entire album) and finally took the decision to leave DEEP PURPLE and form a new band called RAINBOW. During a short touring break before the last of the planned dates, Blackmore informed the management about his decision to leave and the management took the opportinity to bring in the Rolling Stones mobile recording studio to capture the MKIII final shows taking place in Graz, Saarbrücken and Paris.