Tuba (foreign language: tuba) is a brass instrument with the lowest range in wind music and orchestra, which was invented by German Wei plessy in 1835. There are four kinds of this instrument: E-flat, B-flat, C-flat and F-flat. The tuba has a very deep tone and is played as the lowest voice in the band. In order to facilitate walking and carrying, tuba is usually held on the chest with a strap.

Tuba is mainly used for bass harmony or rhythm in bands, and is rarely used for solos. In fact, tuba is not only rich in bass, but also beautiful in treble, so modern composers occasionally play melodies with tuba. For example, the theme of "Oxcart" in the photo exhibition of Ravel's orchestration is played in tuba.

Tuba playing posture

1. Sitting posture: the head is straight, the feet are separately seated on the front half of the chair, the mouth is upward, the digital body is placed on the inner side of the two thighs, the left hand holds the elbow of the digital body, the right thumb is inserted into the ring, and the other four fingers are naturally bent into an arch and placed on the four numeric keys in turn.

Touch the outer half of the number keys with your fingertips when pressing the keys, and don't leave the number keys when starting the keys. When playing, the horn should adapt to people, not people. It is necessary to adjust the elevation of the horn along with the opening and closing of the thighs, so that the position of the horn mouth can reach the height suitable for playing, and the phenomenon of raising the head or lowering the head to approach the horn mouth to play the horn can be avoided.

2, standing posture There are two kinds of standing posture: holding number and carrying number. Standing posture: feet are naturally separated from shoulder width or stand at attention as needed. Holding the horn, the shoulder strap is slung over the shoulder, the big elbow of the horn is held in the left hand, and the waist and hip are attached to the small wall, so as to support and bear a certain weight of the horn. The position of the horn mouth depends on adjusting the length of the strap and the supporting force of both hands, so that the horn body can be lifted to a height suitable for playing, and other requirements are the same as sitting posture.

Lifting the horn is to insert the horn from the head and right arm, and put it obliquely from the left shoulder to the right waist, with the horn mouth facing forward, and hold the big elbow of the horn with the left hand. Adjust the position of the horn mouth through the connecting pipe of the horn mouth to achieve the height suitable for playing. Other requirements are the same as holding the horn.

The above contents refer to Baidu Encyclopedia-Da.