Music21

Music21 is an open-source Python toolkit designed for music analysis and composition. It allows users to work with musical scores digitally—reading, creating, and manipulating musical notation and data. With Music21, you can analyze patterns, extract musical features, generate new compositions, or transform existing scores. It’s widely used by researchers, educators, and composers to facilitate understanding and experimentation with music in a computational way, bridging music theory and technology. Essentially, it provides a powerful, flexible platform for exploring and working with music in a digital environment.