"Only When I Sleep" is a song by Irish folk rock band The Corrs, released in September 1997 as the lead single from their sophomore album, Talk on Corners (1997). The song focuses on being in love with someone and fantasizing, in your dreams, not focusing on someone in reality. The track was also included on the second issuing of the album, Talk on Corners: Special Edition (1998), and was also recorded live with an orchestra for MTV's Unplugged (1999). It is also featured on Dreams: The Ultimate Corrs Collection (2006). "Only When I Sleep" managed to peak at number 10 on the Irish Singles Chart, number 34 on the Australian Singles Chart, and number 58 on the UK Singles Chart.

Talk on Corners is the second studio album by Irish pop rock band The Corrs. It was released on 17 October 1997 by 143, Lava and Atlantic Records. Preceded by lead single "Only When I Sleep", which became a top ten hit internationally, the album was an immediate commercial success in several territories, including Ireland, Spain, Sweden, Denmark, Australia, New Zealand and Japan. Its commercial performance elsewhere was initially modest, however.