デジャヴ

"Déjà Vu" is a song by American singer Beyoncé featuring American rapper Jay-Z. It was produced by Rodney "Darkchild" Jerkins, 808-Ray, Jon Jon Traxx, and Beyoncé for her second solo album, B'Day (2006). "Déjà Vu" is an R&B song, which incorporates elements of 1970s funk and soul music. Its music is largely based on live instrumentation, including bass guitar, hi-hat and horns, except the Roland TR-808 drum machine, which is a non-live instrument. The song's title and lyrics refer to a woman being constantly reminded of a past lover.