A pipe organ is a musical instrument that produces sound by forcing air through pipes. Each pipe corresponds to a specific note, and the instrument can have thousands of pipes of various sizes and materials. The player, known as an organist, uses a keyboard to control the flow of air and create music. Pipe organs are commonly found in churches, concert halls, and theaters. They can vary in size from small, portable instruments to large, elaborate installations. The design and construction of a pipe organ can be quite complex, often involving skilled craftsmanship and engineering to achieve a rich, resonant sound.