Generate a correct and concise answer for the question based on the words in the context.

Context : Mathilde Grooss Viddal (born 6 May 1969 in Oslo, Norway) is a Norwegian musician (saxophone and clarinet) and composer, known as the leader of Friensemblet and as member of bands like Lucky Loop and Eick/Viddal Duo. 
Question : What instrument does musician Mathilde Grooss Viddal play?
saxophone