Lessons and Instruction

Music Minus One - Participatory recordings and accompaniment music for musicians and vocalists, including all styles.
http://www.musicminusone.com/

Edly's Musical EdVentures - Sells two books: one to learn music theory and one for piano.
http://www.edly.com/

Allstate Sight Reading - Books for all instruments and choral students.
http://home.att.net/~l.mclure/

Pro Audio Music - Wide selection of books, videos, CDs and software for all instruments and music topics.
http://proaudiomusic.com/educational.htm

MVP: Music - Offers an extensive collection of instructional videos.
http://www.mvphomevideo.com/

Dr Downing Music - Troubleshooting books for all musicians.
http://www.drdowningmusic.com

Southern Music Company - Sheet music and methods for all instruments and ensembles.
http://www.southernmusic.com/

Comp-U-Xpress, Inc. - Offers songbooks and instructional books, CDs, and DVDs for various instruments and styles.
http://www.easymusicbooks.com/

Creative Horizons Music - Sells biblical psalms sheet music, a chord scale chart, and a handbook explaining music theory.
http://www.creativehorizonsmusic.com/

Musician's Workshop - Video and audio products for string and keyboard instruments, harmonica, and tinwhistle.
http://www.musicians-workshop.com/

Berklee Press - Books and recordings covering all instruments and all main music topics.
http://www.berkleepress.com/

Allegro Music Online - Complete line of products including popular piano methods and Suzuki materials.
http://www.allegromusiconline.com/

ADG Productions - Books, CDs, videos and software for most instruments and styles.
http://www.adgproductions.com/

Mike Mangini's Rhythm Knowledge Online - It offers rhythm instruction materials for all instruments.
http://www.rhythmknowledge.com/

Healing Music - Books, CDs and tapes to practice singing and songwriting.
http://www.healingmusic.net/

Homespun Tapes - Wide selection of videos, CDs and audio cassettes for all instruments and styles.
https://www.homespuntapes.com/

Musicroom.com - Music tuition and music-related books for all instruments.
http://www.musicroom.com/mfschools.ihtml

One Day at a Time - Offers a selection of musical instructional products for all instruments and styles.
http://www.1dayx.com/

ModRock.com - Guitar tabs, books, videos, sheet music, and CDs for all instruments.
http://www.modrock.com/

Cassette and Video Learning Systems - Instructional books, DVDs and video for guitar, bass, keyboards, drums, harmonica, banjo mandolin, violin and fiddle.
http://www.cvls.com/

Flying Leap Music - Publishers of You've Got Rhythm, a method to learn and improve music-reading skills.
http://www.fleap.com/

Music in Motion - Sells books, videos, audios, awards, teaching aids, posters, gifts and software.
http://www.musicmotion.com/

Letsplaymusic.com - Offering several educational books for accordion, harmonica, and guitar.
http://www.letsplaymusic.com/

MusickEd.com - Study guides and learning tools for all instruments. Also online lessons.
http://musicked.com/

Music Message International - Offering instructional videos for several instruments.
http://www.musicmessage.com/

Ron Greene's Music Dials - Visual reference guides that show the chords and scales you can play with all instruments.
http://www.musicdials.com/

Comprehensive Ear Training - A progressively graded series of books, CDs, cassettes, and MIDI discs.
http://www.keystrokepublishing.com/

Musicridge - Offers instructional videos for accordion, stringed instruments, drums, and brass ensembles.
http://www.musicridge.com/

Perfect Pitch - Offers a training program by David Lucas Burge, designed to teach pitch recognition by ear. Includes research information, and a partial lesson.
http://www.perfectpitch.com