“I Want to Know What Love Is” is from Foreigner’s 1984 album Agent Provocateur. Written by guitarist Mick Jones, the power ballad became the band's biggest hit, reaching #1 on the Billboard Hot 100, #1 on the UK Singles Chart, and topping the charts in Canada, Australia and several other countries.
Seeking a grand, spiritual atmosphere, Mick Jones invited the New Jersey Mass Choir to perform the song's unforgettable gospel finale, creating an iconic climax. The song's massive success helped turn the long-delayed Agent Provocateur into a commercial triumph despite its troubled production and internal band tensions, and it earned a second life in 2009 when Mariah Carey brought the song to a new generation of listeners with her own version.