will.i.am was "intimidated" by the "U2-ness" of U2 when he worked alongside them.

The Black Eyed Peas musician and producer has rubbished claims his song I Got A Feeling "borrows" it's melody from the Irish band's track I'll Go Crazy If I Don't Go Crazy Tonight.

will admits working with the iconic band made him a little jittery though.

"It sounds nothing like that. I recorded for a month with U2. Even though I worked with Michael Jackson, their U2-ness intimidated me," he told NME magazine.

"I didn't know how to suggest a song from scratch. So I co-produced I'll Go Crazy If I Don't Go Crazy Tonight and kept I Got A Feeling for us."

will also worked with Cheryl Cole on her new album. The singer recorded a rap song for A Million Lights, but it didn't make the record. will - who can't remember the title - is glad they did it anyway.

"I did it as an exercise. A lot was happening at that time so I was kind of using it as therapy," he revealed.