A pipe organ is a large musical instrument that produces sound by forcing air through pipes. Each pipe corresponds to a different musical note, and when a musician plays the organ, they can create beautiful melodies and harmonies. Pipe organs are often found in churches, concert halls, and cathedrals, where their powerful sound can fill the space. The instrument is played using a keyboard, similar to a piano, and sometimes includes pedals for additional notes. Famous composers like Johann Sebastian Bach wrote many pieces specifically for the pipe organ, showcasing its rich tones and versatility.