"Don't Think They Know" was originally a duet between Aaliyah and Playa member Digital Black, recorded in 2001 and produced by J-Dub. The song was later released in 2005 on Black's Memoirs of a R&B Thug album. The 2013 version, first introduced as "They Don't Know", with Chris Brown as the lead singer, features not only previously heard Aaliyah's part, but also vocals that were not used in Black's version. "Don't Think They Know" was released to digital retailers on June 17, 2013 and was sent to Rhythmic contemporary radio in the United States on July 1, 2013.
The video is shot in a grey filter however some objects in the video such as Brown's hair is shot in red and blue which is supposed to represent the Bloods and Crips. The video begins with Brown sitting in a car with 3 other men driving in a neighborhood looking for trouble. Brown then asks to stop the car as he gets out as he walks off out into another block. The music begins as Brown is singing in front of Aaliyah who is shown as a hologram from stock footage. In the plot scenes, Brown is seen leading a group of people while this group is seen walking around the neighborhood leading a peace walk during the entire video. Brown puts up a message saying rest in peace to late Compton rapper Michael "Lil Frogg" Reshard, Jr. who was shot and killed on March 27, 2013 in the end of the video. As the video fades to black a message appears saying:
Dear Aaliyah, we love and miss you. Thank you for inspiring us all.