I was twelve when this song came out.  (Written by the way, by the incomparable Gretchen Peters, who has written many of the songs that will end up on this list.  Including If Heaven, the song that kicked this project off.)  

Anyway, at twelve I loved this songs because I loved horses.  Imagine my surprise when I came back to it as an adult and realized what a sad story it was, I fell it love with it all over again.