Tuba as is the case with Berlioz). In most of Europe, the F tuba is the standard orchestral instrument, supplemented by the CC or BB only when the extra weight is desired. Wagner, for example, specifically notates the low tuba parts for "Kontrabasstuba," which are played on CC or BB tubas in most regions. In the United Kingdom, the E is the standard orchestral tuba. The euphonium is sometimes referred to as a tenor tuba and is pitched in B, one octave higher than the BB contrabass tuba. The term "tenor tuba" is often used more specifically to refer to B
Brass instrument Baroque or Classical pieces. In more modern compositions, they are occasionally used for their intonation or tone color. Brass instruments may also be characterised by two generalizations about geometry of the bore, that is, the tubing between the mouthpiece and the flaring of the tubing into the bell. Those two generalizations are with regard to While all modern valved and slide brass instruments consist in part of conical and in part of cylindrical tubing, they are divided as follows: The second division, based on bore diameter in relation to length, determines whether the fundamental tone or the first overtone is