Check on It is an R&B song written by Beyoncé Knowles, Kasseem Dean, Sean Garrett, Angela Beyincé, and Stayve Thomas for the soundtrack to the 2006 movie "The Pink Panther", in which Beyoncé co-stars. Although not included on its soundtrack album (because it only contains the movies scores), the song is included on Destiny's Child's greatest hits album "#1's" and on selected non-U.S. versions of Knowles' second studio album, "B'Day". It was produced by Knowles and Swizz Beatz.