Everypony Sings' own Dimondium likes to do transpositions of pony songs. The songs often take on a different feel when they're moved to another key, so these projects are interesting to hear.
This time around, Dimondium transposed Smile, Smile, Smile to F# (Gb) major. I really like this version! You can listen to it in the video. If you want sheet music, mp3, or midi files, click here.
Thanks as always, Dimondium!