The format of the show is based on an idea by Swedish singer and chorister Caroline af Ugglas which has been previously adapted by many countries, most notably as Clash of the Choirs in the United States.
Af Ugglas created the format for a televised choir contest, which was picked up by NBC in the United States as the show Clash of the Choirs, and by the Seven Network in Australia as Battle of the Choirs.
Three Choirs Festival | the Clash | Clash of the Choirs | Kevin Clash | Clash of the Sky Galleons | Clash of the Champions | A Clash of Kings | The Clash: Westway to the World | Sydney Philharmonia Choirs | Pinoy Big Brother: Teen Clash 2010 | Clash City Rockers | Battle of the Choirs | Amabile Choirs of London, Canada | Two Sevens Clash | National Youth Choirs of Great Britain | Cover of the April 1983 issue of ''Trouser Press'' magazine (#84), featuring The Clash | Clash On Broadway | Clash on Broadway | ''Clash of the Titans'' | Clash of the Codes | 2010 Israel–Lebanon border clash |
Cans participated with a choir team in the Swedish television program Körslaget (the Swedish version of Clash of the Choirs) in 2008.