Clay Aiken

Clay Aiken joins "The Celebrity Apprentice" seven years after launching his career journey on "American Idol." After winning over millions of viewers with his phenomenal voice and down-home charm, Aiken parlayed his success into full-fledged stardom. He has sold more than six million copies worldwide of his four albums: the double-platinum "Measure of a Man" (featuring the hits "Invisible" and "This Is the Night"), 2004's platinum holiday CD "Merry Christmas with Love," 2006's gold-certified "A Thousand Different Ways" and 2008's "On My Way Here" - all of which debuted in the Top 5 on the Billboard chart.

Aiken has never sounded more at home than he does singing the lushly arranged classics on his fifth studio album "Tried and True," the international pop phenomenon's first album for Decca Records. The bulk of the album, which showcases Aiken's powerful tenor voice and considerable interpretive gifts, is made up of songs from the '50s and '60s that Aiken grew up listening to as a child in Raleigh, North Carolina. For Aiken, "Tried and True" was about getting back to himself after a career performing more pop-oriented material.

In addition, Aiken has launched nine live tours, made the New York Times best-seller list by co-authoring the inspirational memoir "Learning to Sing: Hearing the Music in Your Life," executive produced and starred in his first TV special, "A Clay Aiken Christmas," and won several American Music and Billboard Music Awards - all while donating a significant amount of his time to such charities as his own foundation, National Inclusion Project and acting as a Goodwill Ambassador for UNICEF.

Before Clay Aiken became a music superstar, he worked at a summer camp and was disappointed when he saw that disabled children were not allowed to participate in many of the programs. So Clay eventually helped start National Inclusion Project, which works with schools and summer camps to help create a curriculum and programs that integrate kids with and without disabilities.