1st version from the annonation:
http://www.youtube.com/watch?v=5tZ_rNMflAQ

Oh gosh, this song get's me teary every single time... AND I'M NOT ASHAMED TO SAY THAT!!! *sniff*

If you like this version with the more repeating lyrics, download it here:
http://www.mediafire.com/download.php?4w683o93bnbv00x

The "original" Pony Beat song was made by Eurobeat Brony and as always My Little Pony: Friendship is Magic ©Hasbro