George Michael has died aged 53.
The singer's manager says it's thought he suffered heart failure at his home in Oxfordshire yesterday afternoon.
His former bandmate from Wham, Andrew Ridgeley, says he's "heartbroken" - while Elton John's described his "deep shock" at losing a "beloved friend".
Heartbroken at the loss of my beloved friend Yog. Me, his loved ones, his friends, the world of music, the world at large. 4ever loved. A xx https://t.co/OlGTm4D9O6
— Andrew Ridgeley (@ajridgeley) December 26, 2016
Boy George said "the sadness today is beyond words. Devastating." He was among dozens of big names from the showbusiness world to pay tribute.
Farewell My Friend! ðŸ™ðŸ» Another Great Artist leaves us. 💔Can 2016 Fuck Off NOW? pic.twitter.com/aEGIUNSJbt
— Madonna (@Madonna) December 26, 2016
Michael's pop career spanned four decades and began in 1981 when he was still a teenager.
His solo work saw him try out songs that dealt with more "adult" subject matters, but he never lost his pop instinct.
