Cadenza's apps, such as Cadenza and Millennium Trumpet, allow musicians to play their instruments with a full orchestra that listens to them and adapts to their tempo in real time. This solves the problem of musicians not being able to interact with all parts of the music they are learning, as it can be expensive and difficult to find other musicians to play with. Cadenza's technology transforms recordings into interactive tracks that respond to the musician's style and tempo, creating a personalized and expressive musical experience. Their apps cater to a wide range of musicians, from beginners to professionals, and they have plans to expand into singing, different music styles, and user-generated content in the future.