Sort:  

I think it's better to talk to him. There are a lot of free music there, just explore the website : https://dsound.audio . So much cool music there. To not have an issue with the artist, of course always ask his permission.

Wouldn't be awesome if somehow Dsound and Dtube can have an option of optionally letting a content creator to use some of their music and automatically give % of the earnings that can generate the video to the creator of the music?

That's a good idea as well.