You saw the original paper sketch
https://www.weasyl.com/~anuacyl/submissions/1541675/birdsong-sketch

this is me using gimp and a mouse and tracing the line's by hand because I couldn't use filter's to clean it up (because photo quality). All in all I think I did a fairly good job tracing. You'll notice I fixed the cutie-mark, I wanted the music note stem more to the side when I drew it but couldn't line it up, so I cheated and used gimp's awesome layer abilities to trace the stem then slide it over to be more attractive.