The one I found that has a lot of activity and camaraderie is ADSactly. Now, its not exclusive to Steem. As I understand it they are currently celebrating their 7th birthday which is a bit crazy for me to think of.
They have a view different initiatives and they do like to support musicians. I bring this up, because its relevant for your specific case.
This is their Discord link, but they are not hard to find:
https://discord.gg/t8xvQ3
One of our sister communities, right?
correct my friend.