General

• All-Music Guide - http://www.allmusic.com/ - 
  This site covers music from rock to country and jazz to gospel. Search for musicians by album title, song, style, or label.

• Alternative Music Press - http://www.alternatemusicpress.com/amp.html
  This site provides information, news, and reviews on a wide variety of music: acoustic, bluegrass, jazz, fusion, and much more.

• ASCAP - http://www.ascap.com/index.html -
  Provides access to the American Society of Composers, Authors and Publishers' Database. By using a searchable database you can find song information, where to get permission to use a song, etc.

• Country Music Search Engine - http://country-music-club.com/ - 
  This site provides access to over 4600 country music related sites. Find artists, festivals, and much more.

• Crane School of Music - http://www.potsdam.edu/CRANE/crane.html -
  Provides an extensive list of links to music resources.

• Essentials of Music - http://www.essentialsofmusic.com -
  Find out about classical music: eras, composers, glossary and more.

• Grammy Awards - http://www.grammy.com -
  Provides access to an enormous body of information on the Grammy Awards from 1958 to the present.

• Harmony Central - http://www.harmonycentral.com/ -
  The leading Internet resource for musicians. Find news, product reviews, and more.

• Musicals 101 - http://www.Musicals101.com -
  Follow the history of American musical theatre and film

• MusicSearch - http://musicsearch.com/ -
  Provides access to a search site with over 15,000 music links.

• R & B Primer - http://www.theprimer.co.uk/ - 
  This site provides information on R&B artists, labels, and much more.

• Tunes.com - http://www.tunes.com -
  Provides access to approximately one million music previews and a large selection of music products.

• Worldwide Internet Music Resources - http://www.music.indiana.edu/music_resources/
  Provides access to a vast database of worldwide music resources.

Classical

• Andante Classical Music - http://www.andante.com
  Find extensive information on classical music, highlights include a bibliography, the Concise Grove Dictionary of Music, and much more.

• Classical Music - http://www.classical.net/music/ -
  Provides access to a searchable database on all aspects of classical music.

• The Classical Music Pages - http://w3.rz-berlin.mpg.de/cmp/
  This site provides access to an extensive collection of classical music resources including biographies.

Hymns

• The Cyber Hymnal - http://www.cyberhymnal.org/ -
  This site has over 1,300 hymns and songs from many denominations. You can find lyrics, background information, and scores.

Jazz

• Jazz Web - http://www.nwu.edu/WNUR/jazz/ -
  Provides access to the most comprehensive jazz site on the Web.<
  

Opera

• The Aria Database - http://www.aria-database.com/ -
  Searchable database of nearly 1,000 aria - by name, opera, language, composer, etc.

• OperaWeb - http://archivio.opera.it/English/OperaWeb.html -
  Provides access to a comprehensive site which includes opera singers, schedules, composers, and facts.

• Operissimo - http://www.operissimo.com -
  Find extensive information on operas: performers, composers, opera houses, biographies, and more!

Rock

• Rockhall.com - http://www.rockhall.com/ -
  This site is devoted to the history of Rock and Roll.

• Ultimate Band List - http://ubl.artistdirect.com/   -
  Provides an exhaustive resource on all aspects of music. Contains links to Addicted to Noise, an e-zine; concert information; and radio station information.

Sheet Music

• The Choral Public Domain Library - http://cpdl.snaptel.com/ - 
  This site provides a collection of music in the public domain. It contains 1,800+ scores. All sheet music is downloadable in PDF format.

• Historic American Sheet Music Project 1850 -1920 - http://scriptorium.lib.duke.edu/sheetmusic/ -
  A browseable site permitting searches of American sheet music; includes cover sheet art.

• Sheet Music Collections - http://www.lib.duke.edu/music/sheetmusic/collections.html
  This site, from the music library at Duke University, provides access to collections of sheet music databases.