Ripped the drums from the episode and composed this thing to go with them.
DILeakStudios did the awesome animation of Sweetie Bell and Applebloom playing the strings! Check out his other stuff: http://www.youtube.com/user/dileakstudios

Is she playing the theme to Daring Doo? Who knows.

Download link for the music (Right click - Save as):
http://bit.ly/S4Frhu

Also thanks to A Series Of Informal Animators! You know who you are.