- Rough Guides Ltd. - travel and music guide publishers; includes an online guide to destinations throughout the world, as well as a guide to various genres of music.
- SOS Publications Group - publishers of Sound on Sound magazine -- a publication that covers electronic and computer music applications, equipment and approach.
- Hal Leonard Publishing Corp. - publishes sheet music, books, software, and videos.
- Mel Bay Publications - offers thousands of music instruction and performance books, videos, and recordings for a variety of instruments and styles.
- Wizoo - providers of information in the field of synthesizers, samplers, MIDI, computer music, digital audio, and recording.
- MixBooks - books to help you get ahead in the music industry.
- 2.13.61 Publications - publishes books by Henry Rollins, Nick Cave, Iggy Pop, Henry Miller, and many others. Also a record label with a variety of artists including Henry Rollins, Chris Haskett, The Birthday Party, and The Gun Club.
- ADG Productions - publishes and distributes music instructional products.
- IMMEDIA! - a diversified entertainment company, best known for the Australian Music Industry Directory published every July since 1988, and the Australian Sports Industry Directory.
- Pendragon Press - publishers of books about music and musicology.