GJ. I suggest using Soundcloud as well as b.c. You can also use automation software to distribute your posts on other platforms. Twitter, Tumblr, Reddit and most importantly Youtube still work. Post on steemit and get the post on all platforms.

You may also want to register with a distribution website to distribute music on shops. The distribution is important, because most djs use Beatport as the source of their music. It doesn't cost you a thing to sign a contract with a distributor and it can potentially bring you extra money as well as publicity.

I'm afraid music might be very hard to promote on social media. The way I see it, problem is because the internet is flooded with sounds. There's just so much stuff and there's plenty of sell outs and evil corporations don't help.

gl :)