Euphonium main tuning slide trigger, which allows players more flexibility with intonation. The euphonium, like the tenor trombone, is pitched in concert B. For a valved brass instrument like the euphonium, this means that when no valves are in use the instrument will produce partials of the B harmonic series. It is generally orchestrated as a non-transposing instrument like the trombone, written at concert pitch in the bass clef with higher passages in the tenor clef. Treble clef euphonium parts transposing down a major ninth are included in much concert band music: in the British-style brass band tradition, euphonium music is
Tenor horn whole-bore brass instrument, most players can play some pedal tones, the fundamentals (first partials) of (at least) the shorter tubing lengths. Tenor horn parts are written in the treble clef. The tenor horn is an E transposing instrument written a major sixth above concert pitch: the tenor horn notation for middle C represents the E below middle C in concert pitch (E in scientific pitch notation). The instrument known today as the tenor/alto horn was developed in the 1840s by the Belgian instrument maker Adolphe Sax who, among other instrument design activities, designed two similar families of valved brass instruments,