This 8mm film was originally sold through music magazines in the mid-t0 late 1970s. The filmmakers were very innovative and positioned themselves in different vantage points throughout the arena. They would then mix their multiple angles and create a master, then reproduce it for sale. They filmed San Bernardino 1972, LA 1973, LA 3/25/75, Seattle 3/21/75, and LA 1977. In some cases, they were sold as black and white. but some are color.