The document summarizes a sandbox program to foster music innovation by providing developers access to music content and assets. It outlines challenges for both developers and labels/artists in innovating. The sandbox allows developers to work with briefs and secured content to create commercial apps, with available audio, video, imagery and other promotional assets. It describes the partnership approach, development process, revenue splits that are 40% for developers and 60% for rights holders, and provides examples of initial apps in development.