"harmonium"的定义和意义

What is a "harmonium"?

A harmonium is a keyboard instrument that produces sound by pushing air through metal reeds. It has a set of keys similar to a piano, and when a key is pressed, air is directed through a specific reed, creating a sound. The air is supplied by a set of bellows that are operated either by hand or foot. The harmonium is commonly used in Indian classical music, devotional music, and various folk traditions. It is known for its warm, rich tone and its ability to provide both melodic and harmonic support in musical performances.