Adam Lambert's 'Behind the Music': Sneak Peek Video!

VH1's "Behind The Music" on Adam Lambert is coming up, and judging by this preview video it looks like it's going to deliver on its promises of revealing more about Lambert's rise to fame than ever before.

Lambert famous lost the "American Idol" crown to Kris Allen amid speculation that Lambert was gay. It was that fact that many think might have caused Lambert to lose, seeing as "Idol" winners are determined solely by a fan vote.

Allen is the first to agree that "American Idol" wanted that controversy to play out, though they did it quietly: "He was the guyliner guy and I was the guy next door," Allen said.

"The show knew exactly what they were doing, obviously. They wanted to pit us against each other."

Check out the preview video below, and tune in to VH1 on Sunday to watch the "Behind the Music" with Adam Lambert.