"'Six Days" is a song by American hip-hop artist DJ Shadow, from his second album, The Private Press. The song was written by Brian Farrell and Dennis Olivieri, and was produced by DJ Shadow. It was released as the third official single from the album in 2002.
The main vocals of the song are sampled from the 1971 song "Six Day War" by British band Colonel Bagshot, with some riffs taken from the 1970 song "I Cry in the Morning" by American singer Dennis Olivieri. Brian Farrell of Colonel Bagshot and Olivieri are both given songwriting credits on the track.
Shadow approached Wong Kar-wai, one of his favorite directors, in an attempt to create a music video unlike his previous ones. Wong also happened to be a fan of Shadow's music and accepted. The idea was to make a short film revolving around the song's hook line: "Tomorrow never comes until it's too late..."
The plot is centered on a man (Chang) who, upon discovering his girlfriend (Graham) has cheated on him, tries to destroy all traces of their relationship, eventually realizing that this is futile, as what has happened cannot be undone. The video was shot by famed cinematographer Christopher Doyle, who has worked on most of Wong's films and has also shot films by directors Gus Van Sant, Barry Levinson and Phillip Noyce. It contains numerous instances of the number 426, a reference to Wong Kar-wai's then-upcoming film 2046.