"Express" is a song recorded by American singer Christina Aguilera for the accompanying soundtrack album to her film Burlesque (2010). Written by Aguilera, C. "Tricky" Stewart and Claude Kelly and was produced by Stewart, "Express" is an uptempo electropop number. The track premiered on November 3, 2010 on On Air with Ryan Seacrest to promote the soundtrack. It was also released to Australian radio as a single on December 6, 2010.

"Express" received generally favorable reviews from music critics, who praised its both old-school–and–contemporary sound. It attained moderate chart success, peaking at number two on the US Bubbling Under Hot 100 Singles and also charting in other territories. Aguilera performed the track at the American Music Awards of 2010 and on the seventh season of British television singing contest The X Factor.

In support of her sixth studio album, Bionic, Aguilera planned to embark on the Bionic Tour. However, on May 24, 2010, the singer and tour promoter Live Nation both posted messages on their websites stating that due to excessive promotion of Bionic and preparing for her upcoming film debut in Burlesque, she felt she would need more time to be able to put together a show that her fans deserve to see. Aguilera stated that this was not possible to do in less than one month between the release of the album and the start of the tour as she would need more time to rehearse. For the accompanying soundtrack for the film, Aguilera worked with Tricky Stewart; he co-wrote and produced two songs, "Show Me How You Burlesque" and "Express", and produced several other tracks including "Something's Got a Hold on Me", "Tough Lover" and "But I Am a Good Girl". "Express" was premiered on the On Air with Ryan Seacrest radio show (KIIS-FM) on November 3, 2010 as a promotional single from the album.

...
Wikipedia