What is american idols katherine mcphee?

Katherine McPhee is an American actress, singer, and songwriter who gained fame as a contestant on the fifth season of the reality show "American Idol" in 2006. She finished as the runner-up on the show, but went on to have a successful music and acting career.

McPhee released her self-titled debut album in 2007, which was certified gold in the US and included the hit single "Over It." She has since released several more albums, including "Unbroken" in 2010 and "Hysteria" in 2015.

In addition to her music career, McPhee has also pursued acting, appearing in films like "The House Bunny" and on TV shows such as "Smash" and "Scorpion." She has received critical acclaim for her performances, earning a Theatre World Award for her role in the Broadway musical "Waitress."

Overall, Katherine McPhee has established herself as a versatile and talented performer in both the music and acting industries.