Valve trombone

Valve trombone

Valve (tenor) trombone in B♭
Brass instrument
Classification	Wind Brass Aerophone
Hornbostel–Sachs classification	423.233.2 (Valved aerophone sounded by lip vibration with cylindrical bore longer than 2 metres)
Developed	Mid 19th century
Related instruments
Trombone Trumpet Firebird Cimbasso
Musicians
Bob Brookmeyer Bob Enevoldsen Maynard Ferguson Brad Gowans Rob McConnell James Morrison Clifford Thornton Juan Tizol
Builders
Conn Olds King Bach Yamaha Holton Jupiter Getzen Besson J.W. Pepper Kanstul Schagerl

The valve trombone is a brass instrument in the trombone family that has a set of valves to vary the pitch instead of (or in addition to) a slide. Although it has been built in sizes from alto to contrabass, it is the tenor valve trombone pitched in B♭ an octave lower than the trumpet which has seen the most widespread use. The most common models have three piston valves. They are found in jazz and popular music, as well as marching bands in Europe, where they are often built with rotary valves and were widely used in orchestras in the 19th century.