- Harmony Online
 - Sells sheet music, as well as piano, guitar, orchestra, and band supplies. - Perfectly Grand Piano Accessories
- Features piano benches, lamps, cushions, music stands, sheet music, and other piano accessories.
- Piano Lab
- Offers live online piano lessons, as well as piano parts, tools, and accessories.
- Piano Showcase
- Sells piano parts, tools, supplies, books, benches, and accessories. Worldwide delivery available.
- Pianophile Inc.
- Canadian bass strings manufacturer and wholesale distributor of piano parts, tools, supplies, benches, tuning pins, wire, hammers, and piano covers.
- Poeschl Mfg. Co.
- Offers piano benches and accessories.
- Quiet Keys
- Designed to reduce piano volume.
- Spurlock Specialty Tools
- Manufactures hand crafted tools for professional piano technicians, for key rebushing, hammer replacement, regulating, cleaning, and more.
- Style Disk Warehouse
- Offers style disks for Technics and Yamaha keyboards and organs.
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