GUITAR – MIRIAM RODRIGUEZ BRÜLLOVÁ (SLOVAKIA)
VIOLONCELLO – PETR NOUZOVSKÝ (CZECH REPUBLIC)
VIOLONCELLO – JAN POSPÍŠIL (CZECH REPUBLIC)
VIOLA – KRISTINA FIALOVÁ NOUZOVSKÁ (CZECH REPUBLIC)
VIOLIN – ALEXEJ BARCHEVITCH (GERMANY) – he will take part in 2021
VIOLIN – JURAJ ČIŽMAROVIČ (SLOVAKIA)
FLUTE – MÁTÉ PÁLHEGYI (HUNGARY)
FLUTE – KATALIN STEFULA KRAMARICS (HUNGARY)