Written by songwriters Roger Greenaway and Roger Cook, "Something Tells Me (Something's Gonna Happen Tonight)" was released on 5 November 1971 and became a major success for Black, reaching number 3 in both the UK and Ireland during the Christmas period of 1971. The single was produced by George Martin, who had previously produced her UK number 1 single "You're My World". The song was originally written in the key of G major and Black's vocal range spans from G₃ to C₅. The song was Black's biggest hit in the 1970s, as well as her last appearance in the top ten on the UK Singles Chart. The song was also the theme to the fifth series of Black's BBC variety show Cilla. Black also performed the song on Top of the Pops.

The song's B-side, "La La La Lu", was written by Mike Vickers for the film version of Please Sir!, and was also produced by Martin.

In 2006 the Italian chocolatiers Ferrero Rocher used the song in a national television campaign throughout the UK.

British recording artist Emma Bunton covered the song for her third studio album Life in Mono.

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