Alto trombone, nominal pitch: E♭ | D'Almaine & Co | Undated
Alto trombone, nominal pitch: E♭ | D'Almaine & Co | Undated
The alto trombone was commonly used in the 16th and 17th centuries as the top voice of the trombone section, but became less popular in the 19th century when tenor trombones were increasingly used to play not only tenor parts, but also alto and bass parts as well. (Frank Tomes Collection)