- Amati Productions
 - Offers recordings, merchandise, and educational materials by bassist Gary Karr. - Bass Place
- Online catalogue of instructional books, CDs, videos, and software.
- Encyclopedia of Bass Logic
- Technical exercises, transcriptions, technique, theory, and more from Rudi Weeks.
- Gale's Music Books
- Offers a progressive series of technical and melodic studies and recordings for the developing double bassist.
- JustEnough Bass
- Multimedia learning kits for aspiring teen musicians, including how to play, how to make a buck, and finding mentors.
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