All orchestras and ensembles

+ Bulgaria 7 + Denmark 8 + East Germany 2 + England 5 + Estonia 3 + Great Britain 5 + Greece 2 + Ireland 6 + Kingdom of the Netherlands 3 + Latvia 2 + Lithuania 3 + Luxembourg 1 + Monaco 1 + Netherlands 8 + Norway 8 + Portugal 3 + Romania 1 + Serbia 1 + Slovenia 2 + Sweden 7 + Turkey 4 + Ukraine 6

North America

Canada

Chamber Orchestra Of Europe Montreal Symphony Orchestra National Arts Centre Orchestra Toronto Symphony Orchestra Vancouver Symphony Orchestra 64

United States of America

Boston Symphony Orchestra Chicago Symphony Orchestra Kronos Quartet Metropolitan Opera New York Philharmonic Orchestra 668

+ Cuba 1 + Dominican Republic 1 + Mexico 7

South America

+ Argentina 3 + Brazil 5 + Colombia 1 + Peru 1

Asia

Azerbaijan

Azerbaijan State Symphony Orchestra

North Korea

Pochonbo Electronic Ensemble

+ Armenia 1 + India 1 + Israel 7 + Japan 4 + Lebanon 1 + Malaysia 1 + People's Republic of China 6 + Philippines 2 + Singapore 2 + Syria 1 + Taiwan 1 + Thailand 3 + Vietnam 1

Oceania

Australia

Adelaide Symphony Orchestra BOND Melbourne Symphony Orchestra Opera Australia Sydney Symphony Orchestra 37

+ New Zealand 4

Africa

South Africa

Cape Philharmonic Orchestra Cape Town Opera Drakensberg Boys' Choir School Soweto Gospel Choir Stellenbosch University Choir 13

+ Democratic Republic of the Congo 1 + Tunisia 1

All symphonic orchestras

All national orchestras

All radio orchestras

All youth orchestras

All chamber orchestras

All ensembles (Duets...)

All choirs

All opera companies