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10 - Treble or long bridge / treble bridge
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In a piano, the treble bridge (also known as the right bridge or upper bridge) is a wooden structure located at the right side of the piano that supports the strings in the treble (high-pitched) range. The treble bridge is typically made of a hardwood such as maple or beech and is shaped like an inverted U. It is located behind the soundboard, which is the large wooden panel at the back of the piano that vibrates to produce sound. The strings in the treble range are attached at one end to the plate (also known as the harp or frame) and at the other end to the tuning pins. The strings pass over the treble bridge and are held in place by small wooden blocks called bridge caps. The treble bridge transmits the vibrations of the strings to the soundboard, which amplifies the sound of the instrument.
