- A_dontigny
- Abikhzer, Michael
- Abramovitz, Eric
- Ackerman, Geneviève
- Acquelin, José
- Adamcyk, David
- Adami, Giuseppe
- Adams, John
- Adams, Martin
- Adams, Norman
- Adkins, Monty
- Adriaansz, Peter
- Afrakhteh, Mehrshid
- Agostini, Alexandrine
- Aharonov, Moshe
- Aho, Kalevi
- Ahvenniemi, Rebecka Sofia
- Aimard, Pierre-Laurent
- Aitken, Robert
- Akiho, Andy
- Akrostick
- Al-Khabyyr, Muhammad Abdul
- Albéniz, Isaac
- Alberti, Rafael
- Albino, Laura
- Albright, William
- Albu, Sarah
- Aldcroft Trio + 1, Ken
- Aldcroft’s Convergence Ensemble, Ken
- Aldrich, Simon
- Alexandre, Michel
- Alibert, Victor
- Allard, Lyne
- Allard, Marie
- Allen, Gordon M
- Alsina, Carlos Roqué
- Álvarez, Javier
- Álvarez, Pedro
- Amar, Thierry
- Amber
- Ambrosini, Claudio
- Amotz, Roy
- Amy, Gilbert
- Analog Arts
- Anandan, Ganesh
- Anderson, Fortner
- Anderson, John
- Anderson, Julian
- Anderson, Maxwell
- Anderson, William Henry
- Andonova, Lenche
- Andriani, Laura
- Andriessen, Louis
- Andrist, Rachel
- Áñez, Daniel
- Angelova, Vania
- Angers, Michel
- Angers, Shonna
- Anhalt, István
- anonyme
- Ansâri
- Antheil, George
- Antonio, Ian
- Antoun, Carla
- Antwood
- Aoun, Aïda
- Aperghis, Georges
- Apostolska, Aline
- Appassionata
- Applebaum, Mark
- Arango Valencia, David
- Arbour, Patrice
- Arcand, Céline
- Arcand-Tourigny, Sébastien
- Architek Percussion
- Arcuri, Serge
- Arditti Quartet
- Arditto, Cecilia
- Ariyan, Ashot
- Arizpe, Marielena
- Armanini, Mark
- Armbruster, Sascha
- Armenian, Raffi
- Armenian, Van
- Armin, Otto
- Armour, Julian
- Armstrong, John Gordon
- Arnaoudov, Gheorghi
- Arnim, Achim von
- Arnold, Martin
- Arpin, Marie-Claude
- Arraymusic Ensemble
- Ars circa musicæ
- Ars Nova
- Arsenal à musique, L’
- Arsenault, Hugo
- Arsenault, Jacques
- Arsenault, Valérie
- Arseneault, Raynald
- Art of Time Ensemble
- Arte Quartett
- ARTefact
- Artemiev, Artemiy
- Artificiel
- Arulanandam, Amahl
- Ascione, Patrick
- Asselin, Rosalie
- Association de musique actuelle de Québec
- Astapov, Eugene
- Atelier de gamelan de l’Université de Montréal, L’
- Atelier de musique contemporaine de l’Université de Montréal
- Atelier de percussion de l’Université de Montréal
- Athanore
- Atlan, Françoise
- aTonalHits
- Attar, Yaniv
- Aubin, Claude
- Aubut, Alain
- Auclair, Martin
- Audran, Edmond
- Audry, Sofian
- Auger, Gilles
- Austin, Kevin
- Aventa Ensemble
- Ávila, Thérèse d’
- Azguime, Miguel
