Great project! I've been using mididings for similar purposes. Main draw of this for me is customization in go instead of cpp. How would you say it compares otherwise?
Pigiron is actually an evolution of a previous (unreleased) project I wrote years ago in Java. It had a similar structure of linked nodes, each specialized for a specific task. One of the things it had that Pigiron so far does not, are sysex editors, specifically for the DX7 and Oberheim Matrix synths. At some point I'll probably write a client app for the DX7 and maybe a more general sysex editor. Sadly the Oberheim has died. Another idea I want to investigate is integrating basic synthesis blocks that can be linked directly into the Pigiron tree. I want to keep it relatively simple though.