Black Eyed Peas star WILL.I.AM is suffering from a painful hearing problem - he has tinnitus.
The hip-hop star has revealed he has been secretly suffering from a permanent ringing in his ears, which he can only ease by surrounding himself with more noise and music.
And admits the condition has turned him into a workaholic, since the pain is only alleviated on stage and in the studio.
He tells Britain's The Sun, "I don't know what silence sounds like any more. Music is the only thing which eases my pain.
"I can't be still. Work calms me down. I can't be quiet as that's when I notice the ringing in my ears. There's always a beep there every day, all day. Like now. I don't know exactly how long I've had this but it's gradually got worse."