1212.com
Lists businesses and industry professionals by country in categories such as recording studios, voice-over artists, session singers, producers, lighting services, film composers, and management agencies.
http://www.1212.com/

Music Mates, LLC.
Free and paid submissions by U.S. bands seeking musicians and vice versa.
http://www.musicmates.com/

Music Review
Categories include radio stations, artists, producers, booking agents, charts, CD duplication, recording studios, and genres such as blues and gospel.
http://www.musreview.com/

Musichits
Hundreds of music links, sorted by artist, genre, downloads.
http://www.musichits.org/

Singer/Songwriter Directory
Links to thousands of official sites and fan pages organized by genre and by alphabar, with section for resources such as music publishers, accepting user submissions.
http://www.singer-songwriter.com/

Music, Guitar and Bass Links
Includes musical instrument manufacturers, equipment dealers, bands and guitar/bass tablature.
http://www.angelfire.com/ar2/guitar/

Music Yellow Pages
Links to manufacturers, wholesalers and distributors in the music, pro audio and entertainment lighting industries organized into narrow categories, with category alphabar.
http://www.musicyellowpages.com/

MusicDish Genome Project
Thousands of user-submitted annotated links in categories accessible by dropdown list. From Tag It, e-publisher located in Long Island City, New York.
http://musicdish.com/genome/

Musical Note
Links to leading manufacturers of guitars, pianos, keyboards, drums and percussion.
http://www.musicalnote.com/musicalinstruments.htm

DailyTunes.com
User submit titles of songs they love and a server offers a new one randomly each day, with links to iTunes audio, and recommendations by genre.
http://www.dailytunes.com/

Discographies
Ralf Henke offers discographies with album artwork on an eclectic selection of artists including rhythm and blues, soul, and jazz.
http://www.musiclovers.de/

Musicians Gallery
Extensive links to musicians and ensembles organized by instrument and style, with additional categories offering links to music teachers, organizations, and vendors catering to musicians. Listing links from around the world with emphasis on the UK.
http://www.musiciansgallery.com/

Topmusiclinks
Links to information resources as well as bands and artists, sorted by genre or decade.
http://www.topmusiclinks.co.uk/

UCSB Libraries: Internet Resources in Music
Extensive, cross-field musical links provided by the University of California Santa Barbara Arts Library. Partial list includes instruments, library archives, associations and popular music.
http://www.library.ucsb.edu/subjects/music/music.html

Musictory
Offers links to lyrics, chords, official sites, biographies for over one thousand artists. Focuses on mainstream music.
http://www.musictory.com/

Musicollaborate
Directory for professional songwriters and musicians. Listings for professional openings.
http://www.musicollaborate.com/index.php

The Concert Goer
Concert reviews directory. Also provides information on concert tours, concert information and backstage pass information. Accepts user submissions.
http://www.theconcertgoer.com/

ListenMusic.ca
Directory with links to various musical resources. Extra focus on technology-related music sites.
http://www.listenmusic.ca/

MusicWorld1000
Music catalog and community directory. Covers a wide range of music styles and industry sites.
http://www.musicworld1000.com/

Musician's Archive
Directory of links to articles on guitar and bass, effects, piano, keyboards, drums, songwriting, recording and business/legal aspects of the music industry.
http://www.musiciansarchive.com/

Sibelius Academy: Music Resources
Helsinki, Finland conservatory offers links to composers, instruments, research, opera, and music theory.
http://www2.siba.fi/Kulttuuripalvelut/music.html

Musicsage
A cross between a music directory and a search engine.
http://www.musicsage.org/

MFYI.com - Music For Your Information
Educational resource with discographies, profiles, awards, tourographies, and quotes for musicians and bands.
http://www.mfyi.com

Portal 4 Music
Music portal with links, music news, articles and commentary.
http://www.portal4music.com

Anusaya
Interactive music community with downloadable audio, reviews, interviews, biographies and blogs.
http://www.anusaya.com

Barebonz International Musician Directory Services
A free worldwide directory of musicians, teachers and bands.
http://websites.dyndns.org/barebonz/