Both the track's B-sides sample tracks from Surrender: "The Diamond Sky" samples the track "Surrender", and "Studio K" samples "The Sunshine Underground".
"Let Forever Be" was The Chemical Brothers' fourth top ten single in the UK, peaking at number 9 in the UK Singles Chart. The song was also one of their biggest hits in the United States, peaking at number 29 on the BillboardModern Rock Tracks chart.
The video for the track was directed by Michel Gondry, and utilized ground-breaking video and film effects in its depiction of a young woman's nightmares (the girl is played by actress and dancer Stephanie Landwehr). The video, which drew much visual inspiration from Ray Davies' 1975 Granada TV production Starmaker, received much media attention and became one of the most well-known videos from the band. The video also makes specific visual and thematic references to the dance sequence "I Only Have Eyes For You" (music by Harry Warren; lyrics by Al Dubin), choreographed by Busby Berkeley for the Warner Brothers musical Dames (1934) directed by Ray Enright.
Pitchfork Media named it the "quintessential Michel Gondry video" and ranked it at number 7 in their list of the "Top 50 Music Videos of the 1990s".