Avicii has died aged 28, his publicist has confirmed.
The Swedish DJ and producer - whose real name is Tim Bergling - was found dead in Muscat, Oman earlier today.
In a statement quoted by Billboard, the DJ's publicist Diana Baron said: "It is with profound sorrow that we announce the loss of Tim Bergling, also known as Avicii.
"The family is devastated and we ask everyone to please respect their need for privacy in this difficult time.
"No further statements will be given."
He had retired from live performing in 2016 for health reasons.
Calvin Harris was among those paying tribute to Avicii this evening:
Devastating news about Avicii, a beautiful soul, passionate and extremely talented with so much more to do. My heart goes out to his family. God bless you Tim x
— Calvin Harris (@CalvinHarris) April 20, 2018
I have no words. I remember how amazing it was to make Lonely Together and it felt like just yesterday we were talking. Condolences to Avicii's family, friends, and the fans who supported him. May he rest in peace. Gone too soon. I’m devastated. Heartbroken.
— Rita Ora (@RitaOra) April 20, 2018
Such sad news to hear about Avicii passing. Too young and way too soon. My condolences go out to his family, friends and fans x
— DUA LIPA (@DUALIPA) April 20, 2018
Oh my god truly devastated for Avicii very very sad news way to young ... what a talent he was. rest in peace x
— Liam (@LiamPayne) April 20, 2018