I think the frustration with music lovers is that relevance isn't really determined by ad spend or what's promoted (I already determined a band was relevant to me by liking them) and it shouldn't be difficult or require extra "boosting" for bands to just have a follower receive each update they have.
I have a friend who is very into music and uses facebook because artists and their fans haven't agreed on some other music centered social app (yet).
He wants the exact opposite of what you described i.e. see ALL updates from all bands I follow in a feed.
His feeling is "Facebook sucks for music because I don't even see the posts from the artists that I follow". I tend to agree. If you are following some niche group or organization and you want to be certain that you receive updates... well facebook isn't good for that anymore. Who knows what you have been algorithmically disqualified from viewing?