WorldStarHipHop founder Lee O'Denat has died at the age of 43, according to TMZ.
The CEO, who was known as "Q" died in his sleep Monday night.
An autopsy is scheduled for later on Tuesday, although sources told TMZ he likely died from a heart attack.
WorldStar was founded in 2005 as a place to host mixtapes. It later developed into a hub of viral videos and is responsible for helping launch the careers of Mick Jenkins, Wiz Khalifa and Migos, among others, according to Mashable.
Fans have taken to Twitter to express their condolences and thoughts on O'Denat's passing.
I know for a fact that story is valid for so many other artists. RIP Q. Legend in the game. Internet pioneer.— spread love (@mickjenkins) January 24, 2017
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