Verlage A-Z
- Abile Music
- Abingdon Press
- ABRSM
- Acanthus Music
- Accent On Music
- Accolade Verlag
- Accura Music
- Acoustic Music Books
- Acoustics Publishing
- Activist Music
- Acuff Rose
- Acuta Music
- ADG Productions
- Adler Musikverlag
- Advance Music
- Aebersold
- Agape
- Agifty.At
- Aim Gifts
- AirTurn
- AJK Music
- Alan Simmons Music
- Albert Brussee
- Alea Publishing
- Alex Lofoco
- Alfonce Production
- Alfred Lengnick
- Alfred Music Publications
- Alfred Music Publications Germany
- Alfred Music Publications United Kingdom
- Alias Press
- Alkor-Edition Kassel
- Allemanda S.a.S. Edizioni Musicali
- Allesimfluss Verlag
- Alliance Music Publications
- Alpensound
- Alphonse Leduc
- ALRY Publications
- Alsbach Educa
- AMA Verlag
- Amadeus Press
- Amadeus Verlag
- American Composers Forum
- AMP Amsterdam
- Amphion
- Amsco Publications
- Amstel Music
- Andel Music
- Anglo Music Press
- Anglo Records
- Anne Fuzeau Productions
- Annie Bank Edition
- aNueNue
- Apollo Verlag
- Applause Books
- Aquarius
- A-R Editions
- Arc Music Group
- Arco Music Publishing
- Arjan Breukhoven
- Armando Editore
- Armelin Musica s.a.s.
- Arpège Musique
- Arrangers' Publishing Company
- Ars-Viva-Verlag
- Art of Sound Music
- ArtistPro
- Artists Ahead Musikverlag
- Ascolta Music Publishing Houten
- Ashley Publications
- Associated Music Publishers
- Astoria Verlag
- Astute Music
- Atlantic Music
- ATV Music
- AuRen Musikverlag
- Aureole Editions
- Austroducks
- AVID Technology
- Axe Heaven