While she worked on the film, 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". The earliest sessions took place in Spain with programmer Jake Davies. 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 that she 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 (also known as 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 grew tired of "big beats".