I have written permission for every single track I use.
I started recording screenshots of them the first few days, heres a sample
The tracks we promote do not contain samples of other tracks unlike 95% of similar channels.
I went ahead with the rebranding at oscars advice, and it's turning out very well.f
EDIT: This is a hobby for me aswell, we've only promoted underground music (half with under 100 views/listens) and I take it fairly seriously. I include links to all the socialnetworks our featured artists use so you may contact them to obtain permission if you wish.