Player piano

A player piano is a type of self-playing piano that uses a mechanism to operate the keys and produce music without a human performer. The mechanism is typically powered by a pneumatic system or, in more modern versions, by electronic means. Here’s how it generally works: 1. **Music Roll or Digital Input**: Player pianos are often fed music through a roll of paper with holes punched in it (in traditional versions) or via digital instructions in more contemporary models.