Avicii has been described as one of the "true global superstars".
The Swedish DJ and producer passed away yesterday aged 28.
He stopped performing live in 2016 for health reasons but the cause of his death isn't yet known.
Avicii, whose real name is Tim Bergling, topped the charts around the world with hits including Levels, Wake Me Up and Hey Brother.
Tributes have been pouring in online:
No words can describe the sadness I’m feeling right now, hearing about Avicii passing away....ðŸ’”
Thoughts go out to his family and friends...
— Zedd (@Zedd) April 20, 2018
— MARTIN GARRIX (@MartinGarrix) 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
Something really horrible happened. We lost a friend with such a beautiful heart and the world lost an incredibly talented musician. Thank you for your beautiful melodies, the time we shared in the studio, playing together as djs or just enjoying life as friends.
RIP @Avicii pic.twitter.com/IGiTYetJcq
— David Guetta (@davidguetta) April 20, 2018
An ex-girlfriend of the late Avicii has taken to social media to pay her respects.
Emily Goldberg, who dated the 28 year old between 2011 and 2013, shared text messages and photos on Instagram.
“Come on babe, don’t give up on us. Choose me, and I’ll show you love.” Those are lyrics from a song Tim wrote for me. I wish I could have lived up to them. For the two years we were together, he was my closest confidante, and my best friend. Now I can’t look at Bear without knowing I’ll never see his face again. I’m still collecting my thoughts and thank you for all your kind words and texts. Wake me up when it’s all over, because I don’t want it to be real ðŸ’” #ripavicii #avicii @avicii
A post shared by Emily Goldberg (@emilygoldberg89) on
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."