Only several seconds of his first audition (and neither of his Hollywood Week solo performances) were shown, although his group performance with White Chocolate (including fellow finalist Matt Giraud) was aired in its entirety.
Throughout the competition, Allen received many compliments for his folk-inspired interpretations of modern pop songs.
On June 7, 2009, Allen performed the National Anthem at Game 2 of the 2009 NBA Finals to a packed house including Adam Levine, Jack Nicholson, Rihanna, Paula Abdul and Leonardo Di Caprio.
Following the performance, which was described as "executed to perfection," Kris Allen was released on November 17, 2009.
Certain commentators labeled the win as an "upset" since runner-up Adam Lambert had received a significant amount of media attention throughout the season and was widely perceived to be the show's front-runner.During the final results show, he performed a duet with Keith Urban, singing Urban's single "Kiss a Girl", as well as a series of medleys with his fellow Season 8 contestants.Before the results were announced, Allen performed "We Are the Champions" with eventual runner-up Adam Lambert and Brian May and Roger Taylor of Queen.Allen's Idol coronation song, "No Boundaries" and his version of "Heartless" both charted within the Top 20 of the Billboard Hot 100. Additionally, he taught himself to play the guitar at age 13, and also plays the piano.Allen's post-Idol self-titled album was released on November 17, 2009, by Jive Records. His musical influences, as stated in his Idol confessionals, include the Beatles, Jamie Cullum, Jason Mraz, Pat Monahan, John Mayer and Michael Jackson.