| ABC |
American Broadcasting Company |
AB of the RSM |
Associated Board of the Royal Schools of Music, 1889 (Londres) |
| AC |
Alberta Culture, 1975 (Cultural Development Branch,1946-71; Department of Culture, Youth and Recreation, 1971-75) |
| ACA |
Association des compositeurs de l'Alberta / Alberta Composers' Association, 1977-83 |
| ACBM |
Association canadienne des bibliothèques musicales, 1956 / CMLA, Canadian Music Library Association, 1956-71; CAML, Canadian Association of Music Libraries, 1971 |
| A.C.C.O. |
Associate, Collège canadien des organistes, 1909-59 (A.C.R.C.O., 1959) |
| ACEM |
Association canadienne des éducateurs de musique / CMEA, Canadian Music Educators' Association, 1959 |
| Ace of Diamonds |
Ace of Diamonds (étiquette de disques) |
| ACEUM |
Association canadienne des écoles universitaires de musique / CAUSM, Canadian Association of University Schools of Music, 1965-81 (SMUC, 1981) |
| ACIM |
Association canadienne de l'industrie de la musique / MIAC, Music Industries' Association of Canada, 1972 |
| ACM |
Anthologie de la musique canadienne / Anthology of Canadian Music (étiquette de disques, RCI)
|
| ACME |
Academy of Country Music Entertainment, 1976-86 (CCMA, 1986) |
| ACRA |
Association of Canadian Radio Artists, 1943-63 (ACTRA, 1963) |
| A.C.R.C.O. |
Associate, Collège royal canadien des organistes, 1959 (A.C.C.O., 1909-59) |
| ACTRA |
Association of Canadian Television and Radio Artists, 1963-84; Alliance of Canadian Cinema, Television and Radio Artists, 1984 (ACRA, 1943-63) |
| adap |
adaptateur(trice)(s), adapté(e)(s) |
| ADISQ |
Association du disque, de l'industrie du spectacle québécois et de la vidéo, 1977 (Montréal) |
| adj. |
adjoint(e) |
| ad lib. |
ad libitum (au gré de l'exécutant) |
| AF of M |
American Federation of Musicians, 1896-1901; American Federation of Musicians of the United States and Canada, 1901 |
| A.G.S.M. |
Associate, Guildhall School of Music |
| Alb. |
Alberta |
| Algord |
Algord Music Ltd. (éditeur, Toronto) |
| A.M.A. |
Associate in Music, Alberta, 1936 |
| AMEA |
Alberta Music Educators' Association, 1957-69 |
| AMEM |
Association manitobaine des éducateurs de musique / MMEA, Manitoba Music Educators Association, 1959 |
| amér. |
américain(e)(s) |
| A.M.M. |
Associate in Music, Manitoba, 1936 |
| AMP |
Associated Music Publishers, Inc. (éditeur, New York)
|
| AMQ |
Académie de musique du Québec, 1988 (Académie de musique de Québec, 1868-1988) |
| A.M.S. |
Associate in Music, Saskatchewan, 1936 |
| A.Mus. |
Associate in Music |
| ANC |
Archives nationales du Canada, 1987 (Ottawa) (APC, 1872-1987) |
Ang-Can ou Anglo- Canadian |
Anglo-Canadian Music Publishers' Association, 1885-1921; Anglo-Canadian Music Co., 1921-v. 1943 (éditeur, Toronto) |
| Angl. |
Angleterre |
| anon |
anonyme(s) |
| ANQ |
Archives nationales du Québec, 1920 (Chicoutimi, Hull, Montréal, Noranda, Québec, Trois-Rivières) |
| AOC |
Association des orchestres canadiens / ACO, Association of Canadian Orchestras, 1972 |
| APC |
Archives publiques du Canada / PAC, Public Archives of Canada, 1872-1987 (Ottawa) (ANC, 1987) |
| APMQ |
Association des professeurs de musique du Québec / QMTA, Quebec Music Teachers' Association, 1942 |
| Apogee |
Apogee Press, Inc. (éditeur, Cincinnati, O.) |
| A.R.A.M. |
Associate, Royal Academy of Music |
| ARC |
Aviation royale du Canada / RCAF, Royal Canadian Air Force |
| Archambault |
Archambault Musique; Ed Archambault Inc. (éditeur, Montréal) |
| A.R.C.M. |
Associate, Royal College of Music |
| A.R.C.O. |
Associate, Royal College of Organists |
| A.R.C.T. |
Associate, Royal Conservatory of Music, Toronto, 1947 (A.T.C.M., 1896-1947) |
| A.R.M.C.M. |
Associate, Royal Manchester College of Music |
| ARMTA |
Alberta Registered Music Teachers' Association, 1932 |
| ARMuQ |
Association pour l'avancement de la recherche en musique du Québec, 1980 |
| arr |
arrangé(e)(s), arrangement(s), arrangeur(se)(s)
|
| A.R.S.C.M. |
Associate, Royal School of Church Music, 1945 (School of English Church Music, 1927-45) |
| ASCAP |
American Society of Composers, Authors, Publishers, 1914 |
| Assn |
Association |
Associated Music |
Associated Music Publishers, Inc. (éditeur, New York) |
| A.T.C.L. |
Associate, Trinity College of Music, Londres |
| A.T.C.M. |
Associate, Toronto Conservatory of Music, 1896-1947 (A.R.C.T., 1947) |
| augm. |
augmenté(e)(s) |
| Augsburg |
Augsburg Publishing House (éditeur, Minneapolis, Minn.) |
| auj. |
aujourd'hui |
| A.W.C.M. |
Associate, Western Ontario Conservatory of Music |