流行天后Christina Aguilera为电影《Burlesque》所唱的插曲 "Express" is a song recorded by American recording artist Christina Aguilera. The song was written by Aguilera, Christopher "Tricky" Stewart, and Claude Kelly, and produced by Stewart, for the soundtrack album, Burlesque (2010). The song premiered on November 3, 2010 the On Air with Ryan Seacrest radio show. Aguilera performed the song in 2010 on the British television show The X Factor. The sexual content featured in the performance garnered criticism and lead to an investigation by Ofcom.