Alto trombone

The alto trombone is a member of the brass (Hornbostel–Sachs 423.22). Learn how it makes its sound and explore related instruments.

How the alto trombone makes its sound

In the Hornbostel–Sachs system, which classifies instruments by how they produce sound, the alto trombone belongs to the brass (lip-vibrated aerophones): the player's buzzing lips set the air column vibrating – trumpets, horns, trombones, tubas and the didgeridoo.

More broadly it is one of the aerophones (wind instruments), where sound comes from vibrating air.

Its timbre – the colour that lets you tell it apart from other instruments playing the same note – comes from the mix of overtones its body and resonator emphasise.

From Wikipedia

The alto trombone (German: Altposaune, Italian, French: trombone alto) is the alto member of the trombone family of brass instruments, smaller than the tenor trombone. It is almost always pitched in E♭ a fourth higher than the tenor, although examples pitched in F are occasionally found. The alto trombone was commonly used from the 16th to the 18th centuries in church music to strengthen the alto voice, particularly in the Mass. Alto trombone parts are usually notated in alto clef.