Well, Fasnachu needed a magic system. And honestly, I'm not quite sure how to build classes around it. But it should actually be pretty simple to flesh it out - just grab every bard spell and turn them into spellsongs the same way as I turned the spells into spellseeds. It's a semi-related system.
And it was an idea I got from a combination of the conversation with Sky about Fasnachu and looking over Spellbond again. Always wanted to make a skill based casting system, and this seems a sensible one to create. I've also been bouncing around the idea of just turning Truenaming into a skill and ditching the class around it, but it wouldn't fit into Arhosa. So, Spellsong is the result.
For the moment, just stick things in the Lost Magic forum - when it's all made, I can move it over to the Minor Magics forum.