Music listening service and copyright, what are the pitfalls?

Question

Audio

Hello. There is an idea for a music service, but the issue of copyright is very worrisome. What problems can there be? Is it possible to buy some kind of general license to listen and distribute music?
upd.
And if, for example, you use the music that Vkontakte hosts? Who will be responsible for its use?

Answer 1

You have a direct road to copyright lawyers. It's so easy to take and buy the "Music Box" and become the second iTunes you will not succeed.

Answer 2

You can listen to the recent Runetology with the head of Yandex.Music, there is part of the conversation about copyright in music.