Emerson, Lake & Palmer-Toccata (California Jam 1974, remastered by RudenkoArt)

The concert set a record for the largest number of paid attendance at such an event. Although more people attended the festival at Woodstock in New York, only a few had purchased tickets.
Another record established at California Jam was for the largest (most powerful) concert sound system ever assembled.
Tycobrahe Sound Company combined the touring systems of Black Oak Arkansas, Black Sabbath, Deep Purple, Earth Wind and Fire, and Rare Earth (each manufactured by Tycobrahe)[citation needed], plus 16-ft bass horns from Phoenix Sound and several folded bass horns from Flag Systems.
Total power was 54,000 watts RMS, provided by a number of BFA-2000 amplifiers, manufactured by Tycobrahe.
Emerson, Lake and Palmer's touring sound system was set up about 1/2 mile from the stage and timed with a tape delay to coincide with the sound from the stage

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