Brain Salad Surgery is the group on the pinnacle of its powers,” says drummer Carl Palmer of Emerson Lake & Palmer’s fifth album. “It’s very well recorded and it was definitely one of our most creative periods. If I had to choose one of our albums, that would be the one.”

It’s a viewpoint echoed by his erstwhile bandmates. Keyboard participant Keith Emerson sees it as a “step forward from the past”, which “represented the camaraderie of the band at the time”. Bass participant and vocalist Jezero Greg reckons that it was “the last original, unique ELP album”.