Rusty shared chords to one of the background songs in the finale—the scene where Shining Armor and Cadence discover the power of love. For now, we'll call it just that, "The Power of Love" (if there's an official title, let us know).
The chords are great, as Rusty's work always is. Take a look at the chords here. You can listen to the song itself (extracted by MrNewbyNewb) in the video.
The chords will be added to the big list of music later today. Many thanks to Rusty and all the great ponies whose talents let us enjoy the music of MLP!