Print Music Online
Wide variety of items for all styles: books, videos, karaoke tapes and CDs, and methods.
http://www.printmusiconline.com/

Musicnotes.com
Downloadable digital sheet music or online ordering from a catalog of music books.
http://www.musicnotes.com/

Malecki Music
Printed music for schools, churches, and individuals.
http://www.maleckimusic.com/

Sher Music Co.
Publishers of Jazz and Latin music books.
http://www.shermusic.com

Pepper Music Network
Performance materials for schools, churches, community, and home enjoyment.
http://www.jwpepper.com/

Sheet Music Magazine
Piano keyboard songs, musical arrangements, and show tunes.
http://www.sheetmusicmagazine.com/

The Music Scores Library
Downloadable classical, jazz or Flamenco scores in PDF format; many for free.
http://www.score-on-line.com/

Stanton's Sheet Music
Large catalog of scores: vocal, choral, and instrumental for every kind of ensemble.
http://www.stantons.com/

RBC Music Online
Large inventory of music of all publishers, including band, orchestra, choral, guitar, and piano.
http://www.rbcmusic.com/

Hickeys Music Online
Sheet music, accessories, and CDs; secure online ordering; searchable catalog.
http://www.hickeys.com/

Musictelex
Extensive database of printed music, songbooks, instruction books and videos.
http://www.musictelex.com/

NetStoreUSA: Music
Detailed listing of about 250,000 titles: songs, scores, and books. Offering international delivery.
http://music.netstoreusa.com/

Sheet Music Plus
Wide searchable catalog of sheet music titles covering all instruments and genres. Ships worldwide.
http://www.sheetmusicplus.com/

Sheet Music Company
Thousands of titles in stock for most instruments including piano, guitar, and winds.
http://www.sheetmusicco.com/

Menchey
Provider of instruments, musicbooks, rentals, accessories, repair and instruction since 1936.
http://www.menchey.com

800SheetMusic.com
Also offers tablature and song books: searchable catalog by style or instrument.
http://www.800-sheetmusic.com/

Sheet Music Center
They buy, sell, and trade vintage sheet music, which includes Movie and Show Tunes.
http://www.sheetmusiccenter.com/

Vargas Publications
Offers arrangements and transcriptions of Mariachi music.
http://vargaspublications.com/

Malletworks
Company that offers music for mallet percussion instruments.
http://www.malletworks.com/

Mariachi Publishing Company
Offers Mariachi music transcriptions; site also provides samples in MIDI files.
http://www.sobrino.net/mpc/index.html

Voice of the Rockies
A catalog of piano, choral, brass, woodwind, guitar, organ, vocal and orchestral music.
http://www.voiceoftherockies.com/

Stephens Publishing Co.
Sheet music, MIDI products, Large Print Music, keyboard ensembles, portable keyboards.
http://www.stephensmusicpub.com

Sheet Music Online
Large catalog of classical and popular music, instrumental or vocal.
http://www.sheetmusic1.com/

Florida Music Service
Offering music for solos and ensembles; specialize in the required lists of the Florida Bandmaster Association and the Florida Orchestra Association.
http://www.floridamusicservice.com/

Sheet Music Service
Large catalog for all styles and instruments.
http://www.sheetmusicservice.com/

SheetMusicNow.com
Offers a large catalogue from publishers and performing artists.
http://www.sheetmusicnow.com/

Broekmans en van Poppel
Full lines of sheet-music for every type of instrument.
http://www.broekmans.com/

Sheet Music Direct
Offering officially licensed sheet music, guitar tablatures, and backing tracks. Requires download of "Scorch Sheet Music Viewer" (included).
http://www.sheetmusicdirect.com/

Edwards Music Publishing
Original music by Gary A. Edwards and selected associates in several styles.
http://edwardsmusicpublishing.com/

Manduca Music Publications
Sells mainly music for brass, piano and keyboard. Also scores for woodwinds, strings, and big band.
http://www.manducamusic.com/

History of the Devil
The complete score of the NYC off-Broadway production by Clive Barker.
http://bearmanormedia.com/barkerscore

Musicroom.com
Large catalog by style, instrument, and subject.
http://www.musicroom.com/

Rideau Music
Large selection of instrumental and vocal music.
http://www.rideaumusic.com/

Vintage Sheet Music
Offering a collection ranging from as old as 1897 to around 1930. Catalog and contact information.
http://oldsheetmusic.netfirms.com/

Sheet Music Collections
Provides access to several sheet music databases and collections available through libraries and archives.
http://www.lib.duke.edu/music/sheetmusic/collections.html

Elibron
Large selection of classical and contemporary sheet music.
http://www.elibron.com/english/music/index.phtml

Sheet Music Catalog
Offering songbooks, instruction and reference books, videos and DVDs.
http://www.sheetmusiccatalog.com/

Westerleigh Publications
Offering music for various ensembles, instruments and voices, especially for woodwind and for choirs both sacred and choral.
http://www.westerleighmusic.co.uk/

Katzmarek Publishing
Supplier of public domain music: song books, sheet music, CD's, plus an Encyclopedia.
http://members.aol.com/katzmarek/

Music Exchange
Selection of printed sheet music, music albums and music text books available.
http://www.music-exchange.co.uk/

Foliomusic
Offering scores, anthologies and music books. Old and recent, various styles.
http://www.foliomusic.com/

Arabic Musical Scores
Offers music books and sheet music.
http://www.arabicmusicalscores.com

The Full Pitcher Music Resources
Sheet music with the emphasis on creativity and customisation of resources. This store has mail order items and scores for online printing.
http://www.fullpitcher.co.uk

Dotdismus
UK-based, specializing in sheet music, related books and vocal material including music designed for schools and children.
http://www.dotdismus.com/

Nymet Music
Offers the musical works of selected composers along with its own practical performing editions.
http://www.nymetmusic.com

London Arrangements
Offers sheet music arrangements, transpositions and transcriptions in any key.
http://londonarrangements.co.uk

Kay's Secondhand Books & Used Sheet Music
Music offered includes choral, classical, electronic, general and oldies.
http://www.kaysmusic.com

Burt & Company
Selling CD-ROMs with scores in PDF format of works by classical composers.
http://www.burtnco.com/

Beverley Music Centre
Sheet music, grade course books, and instrument accessories. Also offers new and used instruments, CDs, and repairs. Based in East Yorkshirem, England.
http://www.beverleymusiccentre.co.uk/

di-arezzo
Classical and pop-rock catalogs searchable by instrumentation, composer, publisher, tone, and musical form.
http://www.di-arezzo.com/

Stagepass.com
Includes instructional books, videos, software and midi disks for piano or keyboard.
http://www.stagepass.com/

Dantalian Inc.
Agency for composer Donald Martino with catalogue, biography, humorous illustrated life story in a rogue's gallery, contact and order information.
http://www.dantalian.com/

Hillbridge Music
Music arrangements for steel drums. Catalog with some samples in MP3 format.
http://www.hillbridge.com

Geert Bruinsma Muziek
Sells scores by many publishers for concertband, fanfare band, brassband and wind ensembles.
http://www.musicprint.nl/

Vocal Chords Sheet Music
Downloadable piano accompaniments for singers and pianists, transposed into multiple keys. Includes three free samples, catalogue, and tips.
http://www.vocalchords.com

PEL Music Publications
Ensemble composed and arranged by Wisconsin musicians.
http://www.pelmusic.com

Free Hand Music
Provides an extensive catalog of digital sheet music and guitar tab downloads. Uses Solero music viewer and MusicPad Pro.
http://www.freehandmusic.com/