We gave up working with musical artists for a while. Briefs were becoming too predictable: tour, gallery, news, discography, shop, always the same... And then Mr Beck Hansen called and one exciting, albeit slightly confusing, hour later (actually, he had us at "Hello, this is Beck"), it was clear that this one was going to be different. Inspired by a 19th century Viennese Theatre, which we discovered on a collective trip to the V&A's Museum of Childhood, and taking almost 7 months to complete (don't ask), it has become a defining moment in our work.