Trombone: Brief Description — Vienna Symphonic Library
“The trombone consists of three parts: the bell with the tuning slide; the inner slide, open at the top and bottom with the mouthpipe and mouthpiece attached to its top part and the bell attached to its bottom; and the U-shaped movable outer slide, which connects the two open-ended parallel tubes of the inner slide.”
Trombone: Extended Techniques — Chris Washburne
“The trombone provides you with a variety of possibilities for creative expression. Chris Washburne shows you ways to practice extended technique to expand your performance possibilities.”
Trombone: The Orchestra: A User's Manual — Andrew Hugill
“The aim of The Orchestra: A User's Manual is to provide information about the orchestra, orchestration, composition and instruments, for the benefit of anybody with an interest in the subject.”
Trombone: The Orchestra Up Close — Orchestre Métropolitain
“Part of the brass family, the trombone was originally played in religious settings before becoming part of the orchestra. While there are various kinds of trombones, with different registers and mechanisms, there are generally two tenor trombones and one bass trombone in an orchestra.”