He was also an avid baseball player during high school.
After losing interest in the sport due to injury, he focused more on music.
At Blue Springs South High School, he performed in musicals, including The Music Man, West Side Story, and Singin' in the Rain.
He also participated in choir and drama programs in middle school and high school.Cook's performance of Michael Jackson's "Billie Jean" was considered by some to be a poorly done mockery of an excellent song even though many consider it to be one of his best performances.Another of Cook's performances, The Beatles' "Day Tripper", was credited to Whitesnake.Prior to Idol he released an album entitled Analog Heart, and his post-Idol self-titled album, produced by Grammy-winning producer Rob Cavallo, was released on November 18, 2008 and has since been certified Platinum by the RIAA. David's eldest brother, Adam, battled brain cancer for 11 years until his death on May 2, 2009. He began singing in second grade, when his elementary school music teacher gave him a solo in a school choir performance.His second major-label album This Loud Morning was released on June 28, 2011. He proceeded to perform in virtually every Christmas and PTA program.