Quirijn van Regteren Altena is a highly sought after soloist, chamber music player and orchestral musician. As a soloist, Quirijn has commissioned various compositions for his instrument, which have been featured on his critically acclaimed CDs “Characters” (Olympia Records) and “Pantomime” (Aristo). As a long-time member of the world-renowned AskoSchönberg Ensemble, Quirijn has worked closely with many composers, including John Adams, Louis Andriessen, Sofia Gubaidulina, Maurcio Kagel, and Steve Reich.