It was released in the United Kingdom on 9 August 1999 as the second single from their self-titled debut album (1999).

It became the band's second number-one hit, spending 11 weeks on the UK Singles Chart.

[1] "If I Let You Go" composed in the traditional verse–chorus form in B♭ major, with Brian McFadden, Shane Filan, and Mark Feehily's vocals ranging from the chords of D4 to A5.

[2] The music video was directed by Sven Harding and was filmed in Tenerife, Spain.

[3] It depicts the band walking along a beach and singing by a hillside surrounded by red and yellow flags.