All orchestras and ensembles by alphabetical order (A)

A 2 Violes Esgales

Aachener Domchor

Aarhus Symfoniorkester

Abbey Of Santo Domingo De Silos
SANTO DOMINGO DE SILOS

ABS-CBN Philharmonic Orchestra

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Academia Bizantina
RAVENNA

Academy Of Ancient Music

Academy Of St Martin In The Fields

Accademia Daniel

Accademia Filarmonica Romana

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Accentus Austria

Accentus (Choir)

Accessible Contemporary Music

Adelaide Symphony Orchestra

Adelaide Youth Orchestra

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Aeolian Chamber Players

Aeolian Quartet

A Far Cry

Affabre Concinui

Afghan Youth Orchestra

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African Children's Choir

Ahn Trio

Akadêmia

Akademie Für Alte Musik Berlin

Akademiska Sångföreningen

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Akron Symphony Orchestra

Akron Youth Symphony

Alabama Symphony Orchestra

Alamire

Alarm Will Sound

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Al Ayre Español

Alba

Alban Berg Ensemble Wien

Alban Berg Quartet

Albany Symphony Orchestra

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Albert McNeil Jubilee Singers

Albuquerque Youth Symphony

ALEA Ensemble

Alea III

Alexandria Harmonizers

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Alexandrov Ensemble

Alia Musica

Alla Francesca

All-American Boys Chorus

Allegri Quartet

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Allentown Band
ALLENTOWN

Allentown Symphony Orchestra

Altenberg Trio

Amadeus Quartet

Amar Quartet

Amazonas Philharmonic

Ambassadors Of Harmony

Ambrosian Singers

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American

American Bach Soloists

American Classical Orchestra

American Composers Orchestra

American Heritage Lyceum Philharmonic

American Lyric Theater

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American Modern Ensemble

American Opera Company

American Opera Projects

American Opera Society

American Symphony Orchestra

American West Symphony Of Sandy

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American Wind Symphony Orchestra

American Youth Philharmonic Orchestras

American Youth Symphony

Amici Musicae

Amiina

Amsterdam Baroque Orchestra & Choir

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Amsterdam Guitar Trio

Anchorage Opera

Angel City Chorale

Angelis

Anima

Annapolis Symphony Orchestra

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Ann Arbor Symphony Orchestra

Anonymous 4

Antalya State Symphony Orchestra

Antwerp Symphony Orchestra
ANTWERP

Anúna

apollo5

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Appalachian Symphony Orchestra

Arab Youth Philharmonic Orchestra

Aranis

Ardenza Trio

Arditti Quartet

Argentine National Symphony Orchestra

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Ariel Quartet

Arizona Opera

Arkansas Symphony Orchestra

Armenian Philharmonic Orchestra

Arnold Schoenberg Chor

Ars Flores Symphony Orchestra

Ars Nova Copenhagen

Ars Nova (Polish Ensemble)

Ars Nova Singers

Ars Rediviva

Arsys Bourgogne

Artaserse

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Artecombo

Artemis Quartet

ARTE Quartett

Artis Quartett

Arvada Chorale

Ascolta
STUTTGART

A Sei Voci

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Asheville Lyric Opera

Asheville Symphony Orchestra

Asian Youth Orchestra

Asko Ensemble
AMSTERDAM

Asteria Medievale

Astoria Symphony

Athelas Sinfonietta Copenhagen

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Athens Symphony Orchestra

Atlanta Boy Choir
ATLANTA

Atlanta Chamber Players
ATLANTA

Atlanta Chamber Winds

Atlanta Symphony Orchestra
ATLANTA

Atlanta Symphony Youth Orchestra

Atlantic Symphony Orchestra

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ATOS-Trio

Atrium Musicae De Madrid

Auckland Philharmonia Orchestra

Auckland Symphony Orchestra

Augusta Symphony Orchestra
AUGUSTA

Aurora Symphony Orchestra

Auryn Quartet

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Auser Musici

Austin Lyric Opera

Austin Symphony Orchestra

Australia Ensemble

Australian Chamber Orchestra

Australian Opera And Ballet Orchestra

Australian Youth Orchestra
NEW SOUTH WALES

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Avanti! Chamber Orchestra

Avison Ensemble

Azerbaijan State Symphony Orchestra

Ąžuoliukas