Collaborative Spaces explores the common creative space that arises between composer and performer in the field of new classical music. At the heart of Collaborative Spaces is the work Fachwerk (2009) for solo accordion, string orchestra and percussion by the world-renowned Russian composer Sofia Gubaidulina. The work is dedicated to Geir Draugsvoll, who premiered it in the Royal Concertgebouw in Amsterdam in 2009. Fachwerk was written in very close collaboration with Geir Draugsvoll, and with a specific starting-point in his particular instrument. After the first performance, Gubaidulina has heard Draugsvoll play the work more than 20 times around the world – all the time with the possibility to comment, adjust, experiment and optimise.