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Trombone - Wikipedia
Trombone | Brass Instrument, Slide Mechanism & Musical History
Instrument: Trombone - YouTube
13 Different Types of Trombones (w/ Pictures) – DifferentTypes.net
A Brief History Of The Trombone: The Evolution And Its Origins
How to Play the Trombone (with Pictures) - wikiHow
Types of Trombones: A Complete Guide to the Trombone Family
Home | Trombone Guide
What is a trombone instrument? - Digitaltrombone
Welcome to the Online Trombone Journal