Wow, everypony. You all are blowing us away with your responses to the finale. The latest update is from skootties, who does really fun piano arrangements.
He shared a solo piano arrangement for Big Brother Best Friend Forever, and it is awesome. I have been singing this song on loop since I heard it yesterday, so I am thrilled to see a great piano version. You can check it out in the video, then download the sheet music and play it yourself!