"Dark Side" is a song by American pop rock singer Kelly Clarkson, written by busbee and Alexander Geringas, and produced by Greg Kurstin. The song is set to be released as the third single from Clarkson's fifth album, Stronger."Dark Side" is a mid-tempo synthpop song that incorporates a vigorous music box melody with up-tempo beats in choruses, with its lyrics containing the theme of acceptance in spite of someone's flaws."Dark Side" has received generally positive reviews from musical critics who considered the song as a decent successor to"Stronger (What Doesn't Kill You)", Clarkson's previous single. Critics also praised Clarkson's vocal performance blending with the song's melody as haunting and breathtaking. Clarkson also included the song as the opening in the set list of her Stronger Tour. The song was already receiving early radio airplay in Sydney, Australia from November 2011, on the pop/rock show, 'Juice'. It will officially impact Top 40/Mainstream radio in the U.S. on June 5, 2012.