'Idol' Picks Their Top 12

The "American Idol" contestants were narrowed down to the top 12 Thursday night, with contestants Katelyn Epperly, Todrick Hall, Alex Lambert and Lilly Scott sent home.

American Idol contestants

Epperly said she's "learned a ton," while Scott "didn't know what America wants to hear," but both felt confident they would make their mark in the music business.

Hall thought the experience was "crazy," especially when fans would come up and say they voted for him," and judge Ellen DeGeneres told Lambert that he was "so good" and to keep "believing in" himself.

See who was booted off last week.

The top 12 are: Aaron Kelly, Andrew Garcia, Casey James, Crystal Bowersox, Didi Benami, Katie Stevens, Lacey Brown, Lee Dewyze, Michael Lynche, Paige Miles, Siobhan Magnus, Tim Urban.

The final 12 will perform next week with the first big theme -- singing songs of the Rolling Stones.