I suggest you add a drop down with some composition examples in the editor so it kind of demos out what it is capable of.
The language feels quite natural to transfer an existing score or to compose something out so it could fill out some niche. I'm not a trained musician so take this as an opinion.
There's an examples folder here linked to from the documentation but having examples in editor would be intuitive as well. (here's the link to the folder if you were curious: https://github.com/ddj231/Handel/tree/master/Examples)
