Keith McIvor, better known as JD Twitch , of the influential Scottish electronic duo Optimo , died on Friday, September 19. The news was shared on the group’s Instagram page with a note written by McIvor’s bandmate, Jonnie “JG” Wilkes. Optimo did not specify McIvor’s cause of death, but the musician had disclosed , in July, that he was diagnosed with an untreatable brain tumor. He was 57 years old.

McIvor grew up in Balerno, a village near Edinburgh, Scotland, where he first rose to prominence in the early 1990s as a founding resident DJ at Pure , a party that ran at the Venue. In 1997, he linked up with Wilkes to launch Optimo (Espacio), a renowned weekly party at Glasgow’s Sub Club that ran until 2010, bringing in live acts like Grace Jones, Peaches, LCD Soundsystem, Cut Copy,

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