“Rollercoaster” is a song recorded by Irish pop girl group BWitched for their debut album, BWitched (1998). It was written by group members Lindsay Armaou, Edele Lynch, Keavy Lynch and Sinead O’Carroll along with Ray “Madman” Hedges, Martin Brannigan and Tracy Ackerman. It was produced by Hedges, Brannigan, and Ackerman, with additional production by Cutfather & Joe.
On 21 September 1998, the group released “Rollercoaster” as their second single from the album, following “C’est la Vie” four months earlier. With first-week sales of 157,000, the track debuted at number one on the UK Singles Chart in October 1998 and stayed there for another week. It also reached number one in Australia and New Zealand in November 1998.