The Red Balloon (1956; Criterion)
It's... a thing I've heard of.

Unpleasantville (2010)
I saw a trailer for this, probably in 2011. It has a free mp3 soundtrack album on Amazon. And at some point I tried to order the movie, but that didn't work out. And now the movie's website is just gone. (Though the director, Colton Tran's website is still around, as is this short's facebook page.) And it looks like Tran has some other films I might like to see, if I ever get a chance.