A rare track from Butch Walker called “Arden’s Song (After I’m Gone)” has made its way online. The rumored story behind the song is pretty heartbreaking:

I don’t think he publicly released it, but it’s been shared around some of the Butch Walker fan communities on Facebook and stuff. Apparently he wrote it from the perspective of a little girl who died of a brain tumor. The girl’s uncle put it up on YouTube, so I’m guessing it’s a family Butch knows personally.