I think that your idea will be in demand in the future among certain users. However, at the moment the community is not ready to use such a product. You need to spend a lot of money on how to explain to people why it's important.
A good idea, as the fans of any famous artist will want to have some of the rights to the song and in the future to make a profit. This is very cool from the point of view of young people, and therefore such a project will be in demand.
To this task, you need to bring the idea of the project to the target user. This requires a simple and understandable platform where you can acquire rights to music content. The project needs active advertising.