Kompoz is an online, free, music collaboration service. It allows users to upload music tracks to the community and invite other Kompoz users to add to the track (guitars, vocals, effects and more). Users also have an individual forum for their account where you can share ideas, suggestions and more with the public community about your music.
While public collaborations are free for members, users can also upgrade to the "Plus" tier and enjoy access to non-compressed audio file uploads, desktop file transfer applications and publishing permission to the mobile radio channel along with multiple simultaneous uploads and other features. Monthly prices start at $5 with an annual, yearly subscription available for $50.
The Kompoz API allows utilizes a REST-like structure with GET and POST calls and JSON and XML returns. Developers or other interested users of the API can interact directly with the Kompoz platform to create applications for the Kompoz community. The API allows access to: member, project, project track, song, radio and utility services.