TMZ: WorldStarHipHop founder Lee 'Q' O'Denat dead at 43

WorldStarHipHop founder Lee O'Denat -- known as "Q" -- has died ... TMZ has learned.

We're told Q, the CEO of WorldStar and its face, died in his sleep Monday night.

Q founded the premiere hip-hop website in 2005 when he started posting mixtapes, which gradually progressed into a mash-up of hip-hop videos, fight clips and other outrageous camera footage.

He was 43.

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