The trombonium is a

brass instrument A brass instrument is a musical instrument that produces sound by sympathetic vibration of air in a tubular resonator in sympathy with the vibration of the player's lips. Brass instruments are also called labrosones or labrophones, from Latin a ...

formerly manufactured by H.N. White Company and

Conn-Selmer Conn-Selmer, Inc. is an American manufacturer of musical instruments for concert bands, marching bands and orchestras. It is a wholly owned subsidiary of Steinway Musical Instruments and was formed in 2003 by combining the Steinway properties, T ...

. It was unveiled by H.N. White in 1938 and was manufactured until the mid 1970s. The trombonium has the same

timbre In music, timbre ( ), also known as tone color or tone quality (from psychoacoustics), is the perceived sound quality of a musical note, sound or musical tone, tone. Timbre distinguishes different types of sound production, such as choir voice ...

as a regular

trombone The trombone (german: Posaune, Italian, French: ''trombone'') is a musical instrument in the Brass instrument, brass family. As with all brass instruments, sound is produced when the player's vibrating lips cause the Standing wave, air column ...

except in a smaller, more compact form. It was originally designed to be used as a marching trombone, and has valves rather than a slide thus superficially resembles a

tenor horn The tenor horn (British English; alto horn in American English, Althorn in Germany; occasionally referred to as E horn) is a brass instrument in the saxhorn family and is usually pitched in E. It has a bore that is mostly conical, like the flug ...

euphonium The euphonium is a medium-sized, 3 or 4-valve, often compensating, conical-bore, tenor-voiced brass instrument that derives its name from the Ancient Greek word ''euphōnos'', meaning "well-sounding" or "sweet-voiced" ( ''eu'' means "well" ...

. It was used by the University of Southern California Marching Band and on a handful of jazz recordings (e.g., ''

Jay and Kai + 6 ''Jay and Kai + 6'' is the fifth album by jazz trombonists J.J. Johnson and Kai Winding, credited on this album as The Jay and Kai Trombone Octet. The title refers to the six trombonists (including two bass trombonists) who accompany Johnson a ...

'').

References

Trombones {{Brass-instrument-stub