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
Tuba Tone holes changed the pitch by providing an intentional leak in the bugle of the instrument. While this changed the pitch, it also had a pronounced effect on the timbre. By using valves to adjust the length of the bugle the tuba produced a smoother tone that eventually led to its popularity. Adolphe Sax, like Wieprecht, was interested in marketing systems of instruments from soprano to bass, and developed a series of brass instruments known as saxhorns. The instruments developed by Sax were generally pitched in E and B, while the Wieprecht "basstuba" and the subsequent Cerveny contrabass tuba were