Utrecht String Quartet : Eeva Koskinen (violin) Katherine Routley (violin) Mikhail Zemtsow (viola) Sebastian Koloski (cello) Pieter Wispelwey (cello)
Utrecht String Quartet : Eeva Koskinen (violin) Katherine Routley (violin) Mikhail Zemtsow (viola) Sebastian Koloski (cello) Alexander Zemtsov (viola)