In 2000, while Björk worked on the film "Dancer in the Dark", she also began producing her next album, writing new music and teaming with new collaborators; she has said ""Selmasongs" was the day job and "Vespertine" was the hobby". Her new relationship with artist Matthew Barney and the tension while filming "Dancer in the Dark" have been referred to as the two major forces that shaped what would become "Vespertine". As the process of filming demanded her to be extroverted, the new music she was creating became hushed and tranquil as a way to escape. Björk commissioned Valgeir Sigurðsson to relocate some of his studio equipment from Iceland to Denmark, where "Dancer in the Dark" was being filmed. While living in Copenhagen she also contacted the electronic musician Thomas Knak (aka Opiate), after having enjoyed his 1999 album "Objects for an Ideal Home". Björk's musical taste shifted from the "clang and clatter" and "thumping techno that characterized "Homogenic", as she "was bored with big beats".