So you're on Twitter. Great. But one annoying factor of Twitter is it's so difficult to find verified accounts or follow profiles that are useful for what you are ultimately on Twitter to do: promote your music.
I have come across a few profiles on Twitter associated with different forms of music marketing. These range from people who talk about using social media for music promotion purposes to music management companies to music promotion research to online sites that can assist you in getting your music to a wider audience. There are companies offering a wide variety of promotional tools.
Here are some of the ones I've found on Twitter. Take a look at each profile and website, see if they interest you, and follow if you think they're useful to helping you achieve your goals.