Your connection with music is (imo) the most important part of hip hop dancing. Of course there are a million bits of technique and style you can throw at a song, but if there's no connection then the whole thing falls apart.
I am constantly looking for new ways to teach, and hone musicality for myself and my students. In my search I found this article from Steezy.co. They address the importance of musicality and introduce the basics of music theory to help you create and eight count. This article is a great stepping stone with videos, practices and challenges. Bookmark this bad boy.