The fourteenth song on the "Harbinger of Harmony" Album! From a brony, for bronies/pegasisters! Composed by Dylan Gallus!
Steam Group - http://steamcommunity.com/groups/EternalGloryMusic
Facebook Page - http://www.facebook.com/pages/Eternal-Glory/338222966204036
Xfire Group - http://www.xfire.com/communities/eternglory/
First Album (Free Download) Mediafire- http://www.mediafire.com/?xr6nzcog0iggzsy
Torrent - http://thepiratebay.se/torrent/6864178/Eternal_Glory_-_Power_From_Within_%28Techno__Hardstyle__Melodic%29

Last but definitely not the least, this awesome art was done by none other than Oddyssy! Support his dA, he's a great artist and a great person!
http://oddyssy.deviantart.com