The frontman, who worked with Michael Jackson before he died, says he wishes people could hear their work.

"I actually wish the songs could come out but that’s like wishing Michael was alive – and I know he didn’t want them to," Will.i.am told Metro.

He added: "Working together was awesome. Michael was meticulous, mega-critical: 'Turn that snare down, bring that microphone down – can you bring me some ice?' And it was dope. I swear to God, that happened."

'Michael', released last month, features collaborations with Akon and 50 Cent, and was completed after his death last year.

Meanwhile, The doctor who was with Michael Jackson on the day he died is appearing in court on a charge of involuntary manslaughter.

(by Holly Frith)