We search for the American Idol alums that you didn't know also started on Broadway, from Adam Lambert to Katharine McPhee.

Diana DeGarmo has dabbled in Broadway ... During his season-four audition for "American Idol," Bice told the judges he could provide the "rock," "blues," and "soul" that had been missing from ...

"American Idol" contestants told Business Insider ... Competing in front of the whole country welcomes criticism, especially online Diana DeGarmo, who placed second on the third season of "Idol ...

"American Idol" contestants told Business Insider ... did not respond to BI's request for comment. Diana DeGarmo, who placed second on the third season of "Idol," said that hateful comments ...