Hi there, I came across this post as the @stickupboys reblogged it and I have a lot of respect for the guys.
As a curator for two large curation guilds on Hive and active in anti abuse work, whenever someone offers auto upvotes in return for delegation, it is guaranteed that they will end up upvoting some low effort or shit content even though it's not their intention. People are very quick to catch on these schemes for the sake of guaranteed upvotes. I see you have mentioned weekly audit of the delegation to adjust upvote %, hopefully you will have something in place to monitor content as well because those shit content will be downvoted by the community, and if it continues it will put your project in jeopardy, as we have seen in some previous projects.
The music community is a large and strong one on Hive and is something that can easily bring users together regardless of language. I wish you success with it!