Harmonium, Piano, Organ & Keyboard

There have some musical instruments that produce sound by using keys. However, they differ in how they generate the sound and what features they have. Here is a brief comparison of these instruments:

• Harmonium is a free-reed instrument that uses air pumped by a hand-operated bellows to vibrate metal reeds. It is commonly used in Indian, Bangladeshi and Pakistani Classical music and Folk music. It has a range of about three octaves and can produce a rich and warm sound.
• Piano is a stringed instrument that uses hammers to strike strings when the keys are pressed. It is widely used in Western Classical music, Jazz, and Pop music. It has a range of about seven octaves and can produce a dynamic and expressive sound. It also has pedals that can alter the sound quality and duration.
• Organ is a wind instrument that uses air pushed by a pump or a blower to sound pipes of different lengths and shapes. Organ operated by the musician's hands and feet. It is often used in Church music and Organ based music like Orchestra, Opera music etc. It has a range of about eight octaves and can produce a powerful and majestic sound. The Organ is oldest of these keyboard instruments.
• keyboard is an electronic instrument that uses digital or analog technology to synthesize sound. It can imitate the sound of other instruments or create new sounds. It is popular in rock, pop, and electronic music. It has a range of about five octaves and can produce a variety of sounds. It also has features such as rhythms, effects, and recording.