Whats the next step for this coin?
Very good question.
Musicoin has 4 layers to go, and just being first layer by far:
1. Blockchain (released 2/10, 2017)
2. Music Repertoire (est. 3/14, 2017)
3. Middleware and API (est. 5/30, 2017)
4. Applications (Mobile, IoT, etc.) (est. TBD)