Guitarist Derek Bailey, 74

Yorkshire-born guitarist Derek Bailey, who “has died aged 75 of complications from motor neurone disease, was a guru without self-importance, a teacher without a rulebook, a guitar-hero without hot licks and a one-man counterculture without ever believing he knew all the answers – or maybe any at all. With his passing, the world has lost an inimitable musician and an implacable enemy of commercialised art.”