This trance anthem finds the Canadian electronic music group Delerium linking up with Canadian singer-songwriter Sarah McLachlan. Originally released with a slower tempo on the 1997 album Karma, notable DJs such as Tiësto and Airscape produced remixes, which generated interest in clubs. It got promoted as an uptempo vocal trance song and as a result of increased airplay became an international hit three years later.
Asked during a Reddit AMA how the collaboration came about, McLachlan replied: "I wanted to challenge myself. It was a genre I didn't know much about, and I knew the boys from also living in Vancouver, and they asked me to be a part of it, so I thought it would be fun."
The song featured on the soundtrack for the 1999 movie Brokedown Palace starring Claire Danes and Kate Beckinsale.
McLachlan performed this live with Delerium for the first time in January 2005, during the One World benefit concert in Vancouver for the 2004 Asian tsunami.
"Sloop John B" is a traditional West Indian folk song, and it was a huge hit for The Beach Boys in 1966. They tweaked the lyric, "This is the worst trip since I've been born" to "...I've ever been on" as a wink to acid culture.