Ivan Ericson Quartet: Ivan Ericson (Vln.1) Ake Johnsson (Vln.2) Gosta Finnstrom (Vla.) Gosta Lundqvist (Vlc.)
Grünfarb Quartet: Josef Grünfarb (Vln.1) Andor Sagi (Vln.2) Bertil Appelbom (Vla.) Claude Genetay (Vlc.)