Corporaţie
CHALLENGES FOR SCIENCES AND SOCIETY IN DIGITAL ERA (2 ; 2015 ; Iași)
CHAMBER CHOIR
CHAMBER GROUP OF THE GREAT SYMPHONY
CHAMBER HARMONY
CHAMBER HARMONY PRAGUE
CHAMBER ORCHESTRA
CHAMBER ORCHESTRA OF EUROPE
CHAMBER ORCHESTRA OF KIEV CONSERVATORY
CHAMBER ORCHESTRA OF THE "GH. DIMA" PHILHARMONIC IN BRAȘOV
CHAMBER ORCHESTRA OF THE LENINGRAD PHILHARMONIC
CHAMBER ORCHESTRA OF THE MOSCOW STATE CONSERVATOIRE
CHAMBER ORCHESTRA OF THE ORADEA PHILHARMONIC
CHAMBER ORCHESTRA OF THE WARSAW NATIONAL PHILHARMONIC
CHAMBER ORCHESTRA OF THE WARSAW PHILHARMONIC
CHAPPELL ET CO.G.m.b.H, HAMBURG