Allegro Music 
Classical and (on the Opera d'Oro label) opera recordings.
http://www.allegro-music.com/Arsis Audio 
(Record label of Schirmer) Online catalog.
http://www.arsisaudio.com/
Artek Recordings LLC 
Classical music recording company. Audio samples and online CD orders.
http://www.artekrecordings.com/
Audiofon Records 
Classical music record label based in Miami, Florida. Recordings ranging from piano to cello and orchestra.
http://www.audiofonrecords.com/
Azica Records 
Uses both traditional Jazz and Classical recording techniques.
http://azica.com/
Arbiter Records 
Independent specialist label for historic recordings. Includes detailed liner notes online.
http://www.arbiterrecords.com/
APR Records 
UK label specialising in historic recordings and biographies of famous Classical pianists.
http://www.aprrecordings.co.uk/
Atoll Recordings 
Producers of Classical, historical and contemporary recordings, based in New Zealand.
http://www.atollcd.com/
Acoma Company 
Canadian classical music label. Artists include James Lentini, Jerry Sieg, and William Ghezzi. Artist biographies, MP3s, order information.
http://www.acoma-co.com/
Albany Records 
A specialized label located in New York, USA.
http://www.albanyrecords.com/
Amati 
A label belonging to the Bayer Music Group, a connection of independent classical music publishers in Germany.
http://amati.de/
Avanticlassic 
Offers recordings from new musicians of the genre. News, artist, shop, media, and links.
http://www.avanticlassic.com/
Analekta 
Canadian label. Artists include Richard Raymond, Karina Gauvin, and James Ehnes. Catalog, artist biographies, and label information.
http://www.analekta.com/