I did a little github pushing in the very beginning back when we were called Pocket Conservatory. Really simple stuff that made me respect my cofounder Rose, as well as the rest of our dev team for what they do.

Fiddle stuff: I played a few bluegrass pieces by Edgar Meyer (those violin + bass duos) and some basic hoe-downs. Also extreme respect for bluegrass fiddlers was developed in light of those experiences. One of my favorite fidllers is Jeremy Kittel, you should listen to his track "Chrysalis" - just divine!