Serpent (instrument) also appears in operatic scores by Spontini and Bellini, but it was replaced in the 19th century by a fully keyed brass instrument, the ophicleide, and later on by valved bass brass instruments such as the euphonium and tuba. After that the serpent dropped off in popularity for a period of time. Bernard Herrmann used a serpent in the scores of "White Witch Doctor" (1953) and "Journey to the Center of the Earth" (1959), as did Jerry Goldsmith in his score for "Alien" (1979). In the 1970s, instrument-maker Christopher Monk began playing, and later making Serpents, and in 1976 he
Brass instrument characteristics. Trumpets, trombones, and tubas are characteristically fitted with a cupped mouthpiece, while horns are fitted with a conical mouthpiece. One interesting difference between a woodwind instrument and a brass instrument is that woodwind instruments are non-directional. This means that the sound produced propagates in all directions with approximately equal volume. Brass instruments, on the other hand, are highly directional, with most of the sound produced traveling straight outward from the bell. This difference makes it significantly more difficult to record a brass instrument accurately. It also plays a major role in some performance situations, such as in marching bands.