Crystal Bowersox Auditions for 'American Idol' Season Nine

We first met Bowersox during the auditions in Chicago, the city that also gave us Katelyn Epperly and Lee Dewyze.

Dressed in jeans and a suede vest with her guitar strapped to her side, Bowersox sang "Piece of My Heart," a tune made famous by Janis Joplin.

"Why did you wear a guitar?" guest judge Shania Twain asked before Bowersox began.

"It's kind of a comfort blanket for me," she answered, launching into a soulful take on the tune that had Simon Cowell smiling and Kara DioGuardi welcoming her to Hollywood Week.