I found a radio interview with David. I don't think its been posted. You have to scroll down a bit to get to his. It's from May 28th.

http://www.kzzp.com/cc-common/podcast/single_podcast.html?podcast=johnjayandrich.xml

They start talking about him about 2:20 into the clip. They're a little rude with their comments before they talk with him. They were annoyed because they were told they weren't allowed to ask him about his dad. They don't actually start talking to him until about 4:30 into the clip. They told him he owned One Republic, which I have to agree with. He totally showed them up, IMO.