"Check on It" is a song recorded by American singer Beyoncé. It was written by her, Swizz Beatz, Sean Garrett, Angela Beyincé and Slim Thug, and produced by Swizz Beatz. Serving as the main theme of the 2006 film The Pink Panther, in which Beyoncé co-starred as Xania, it was supposed to be featured on the film's soundtrack. As it was ultimately not included on the soundtrack, the version with additional vocals from Slim Thug was placed on the Destiny's Child's greatest hits album #1's (2005), while the Bun B version was included on the international and Japanese editions of Beyoncé's second studio album, B'Day (2006). Columbia Records released a remix version of "Check on It" featuring both Slim Thug and Bun B as the second single from #1's on December 13, 2005. "Check on It" is a hip-hop-influenced song, which is instrumentally complete with a heavy bassline, strings, and wind instrument. The song consists of two verse-raps by Slim Thug.