Acoustically Adjusted Interference for Improved Response Repair.
All Trombones
Online retailer selling trombone-related products, music, and recordings.
Ardsley Musical Instrument Service
Full-line band and orchestral musical instrument company providing rentals, sales, and repairs.
B.A.C. Horn Doctor Inc.
Baltimore Brass Co.
Baltimore Brass sells new and used instruments.
Bethel Music Store
Online musical instruments store also offers musical instruction.
Instrument oil. Trombone Mouthpieces
Mouthpieces for tenor and bass trombone.
Brook Mays Music Company
Brook Mays has been leading the way for over 100 years, providing the very best musical instruments and accessories, as well as rentals and world-class repair. Brook Mays is proud to be an authorized dealer for: Bach, Blessing, Conn, Denis Wick, Shires, Getzen, Holton, John Packer, Besson, Courtois, Martin, Joral, Rath, Amati, Schilke, F. Schmidt, and Willson.
Brooks-Art sells lifesize sculptures of musicians.
Retailer/Distributor for Kuehnl-Hoyer Instruments
DF Music Enterprise, Inc
Dillon Music
Dillon sells new and used instruments, recordings, accessories, and much more.
Doug Elliott Mouthpieces
Elliott offers a three-piece mouthpiece system which allows you to build a customized mouthpiece with interchangeable parts.
Early Musical Instruments
Buy and sell early musical instruments.
Engemann Mutes
Mutes for all brasses
ErgoBone is a Finnish company that produces a new ergonomic support device for trombonists. This site is available in four languages.
Greg Black Mouthpieces
Makers of custom mouthpieces, including the Alessi line.
Griego Mouthpieces
Christan Griego has launched a new mouthpiece line.
Hans Kromat Brasswind Instruments
German instrument retailer.
Hickey’s Music
This site is packed with trombone products, including sheet music, recordings, accessories, and software.
Hickeys Music Center
A music retailer founded by and geared towards trombonists.
International Musical Suppliers
Their catalog includes instruments, mouthpieces, cases, mutes, and instrument stands.
John Packer Ltd
Servicing the needs of woodwind and brass players of all standards throughout the UK for more than 25 years.
Johnny Paul’s Music Shop
Ft. Worth (TX) area brass repair shop.
Kai Winding Trombone Collection
Kai Winding’s trombone collection is being auctioned off to help pay medical expenses for Jeanne Winding.
Kelly Mouthpieces
The Mouthpiece Wizard makes mouthpieces in 18 colors.
Laskey Mouthpieces
Laskey offers mouthpieces for large & small bore tenor and bass trombone.
L’Olifant Paris
This coloured webiste is dedicated to all brass and woodwind players looking for good used and new instruments, rare mouthpieces and skilled repairing service.
Musica Stampata
Selection of sheet music, books on music, and music notation software. 
Musical Instrument Repair Shop
A full service wind instrument repair and restoration facility. All repairs are performed by our master craftsman with over thirty years professional experience.
Parke Mouthpiece Center
Manufacturer of trombone mouthpieces, including Jay Friedman line.
Rick’s Musical Instruments, Inc.
Sheridan Brass
US distributor of Thein Instruments.
The online shop with high quality products for brassplayers.
Sellers of mouthpieces, gig bags, cases, lubricants, and much more.
Trombone retailer
Spectacular Trombonists
CD of six trombone soloists.
Stones to Bones
Trombone-related products.
Order SuperSlide trombone treatment online.
The Brass Player
Australian Online Musical Sales featuring Weril Gagliardi Tenor and Bass Trombones – Melbourne, Australia
Trombone Online
Trombones, mutes, and mouthpieces
Small online store.
Offers the trombonist a source for products and information.
Tulsa Band Instruments
Tulsa Band carries new and used instruments, accessories, and sheet music.
TuneUp System
Tool designed to aid in the development of intonation skills.
Valve-Hearts combines traditional recording methods with classical valve-technique.
Washington Music Center
Trombone retailer also specializes in repair.