Check out our Ness section for more posts about Ness.
Not sure how old or new this is (it's recent, at least, as it's after the "Press Play" promo tour), but Aggie News Online has an interview with Ness (scroll down).

Q: Back to the tour with P.Diddy, what you like most about this touring?


E. Ness: It’s real hard-work man. With Diddy he’s a major artist, so his accomplishments reflect what he’s done and all the records he sold. He has a major campaign behind him and he got the key to every city. His day starts at 4:00 A.m., he does all the morning shows, visit schools and just make the people love him. He just loves the people and he’s just on the grind promoting this new album “Press Play”. I got the opportunity to be on it and he’s just making it pop-off like that. He works 24/7 around the clock and I can’t even keep up with him. By the time he gets ready for bed he might have to get up and do it all over again, so he’s lucky if he might get four hours of sleep.

He mentions that he is on "Diddy Rock" on Press Play. He is a credited writer on the track, so that is probably what he means.

Via Jorge.