Artist Biography Danish boyband C21 were very popular in Denmark and Asia (especially Thailand). Their first single, Stuck In My Heart, was a big success. C21 released two albums, C21 and Listen. Soon after the release of Listen Esben Duus left the band. Søren Bregendal and David Pepke became a two-piece band, having less success than at the beginning of C21. The group split up late 2005. Søren's still successfull but now as an actor.