Iceland pop experimentalists Múm were formed by Gunnar Örn Tynes, Örvar Þóreyjarson Smárason, and classically trained twin sisters Gyða and Kristín Anna Valtýsdóttir. Formed in 1997, the group met while working on a children's play. Smárason found his perception of music changed through hearing Aphex Twin and decided that he would abandon the guitar-based concepts of his prior bands. This was fine and dandy with his bandmates. Following a number of singles and remixes, the full-length Yesterday Was Dramatic -- Today Is OK was released in 2000 through TMT/Thule in Iceland and Tugboat in the U.K. Each of the band's four members was in their late teens when the record was released, hailed for its playful and imaginative use of all things musical and not so musical.