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On September 19 1970, the day after Jimi Hendrix died, a crowd of curious festival-goers gathered on a farm in Somerset. They had come for the inaugural edition of Pilton Pop, Folk and Blues, lured by a promotional poster that not only boasted a headline set from The Kinks, but also promised free milk and, excitingly, "an ox roast!". Elsewhere, the poster confirmed, there would be a "lightshow, lightship, diorama and films, freaks and funny things", all for the princely sum of £1.