A water organ is a musical instrument that produces sound using water and air. It typically consists of a series of pipes, where water is used to create pressure. When air is blown through these pipes, it generates musical notes. The instrument can be found in various forms, including large outdoor installations and smaller, portable versions. Water organs are often associated with fountains and public parks, where they provide entertainment and enhance the ambiance. They can be powered by electric pumps or manually operated, and their unique sound is a blend of music and the soothing sound of flowing water.