Octavia's Pianist always does a great job with piano reductions, so we were excited to see O.P.'s version of I Wasn't Prepared for This (aka The Failure Song, aka The Failure Success Song... we'll let the MLP wiki fight that one out).
Anyway, this piano version is excellent. You can listen to Octavia's Pianist play the song in the video. Then you can check out the sheet music or download a midi version.
Thanks to Octavia's Pianist! Keep the awesome resources coming, everypony!