Smetana Quartet Jiri Novak, Lubomir Kostecky (violins) Milan Skampa (viola) Antonin Kohout (cello)
Smetana Quartet Jiri Novak, Lubomir Kostecky (violins) Milan Skampa (viola) Antonin Kohout (cello) Panocha Quartet Jiri Panocha, Pavel Zejfart (violins) Miroslav Sehnoutka (viola) Jaroslav Kulhan (cello)