One would think that Adam Lambert has already seen most of his dreams come true, but one box on his career to-do list remained unchecked: television commercial. What ultimately attracted the American Idol season eight alum to the campaign? Its message of acceptance.

“The mission statement really spoke to me,” says Lambert. “They’re encouraging people to look at our similarities as opposed to our differences and that is in line with my philosophy.”

The premise of the “Open Up with Oreo” campaign is simple and powerful: open your heart — like a cookie — to people who are different than you and you’ll discover the similarities.

Says Lambert of the ad’s music: “I think it sounds [like] signature me. I got to go into the studio and suggest how I wanted it recorded. It was very collaborative and a really sweet idea. And we all love Oreo cookies.”