Equestria has been watched over by Princess Celestia for over one thousand years. As alicorns, they have a very long lifespan, however, even though their appearance doesn't show it, they do become weaker with time. Twilight, is given one final lesson that in time, one must learn to say goodbye.
I give credit to the following songs and Toxic Mario for giving me inspiration, but my main source of inspiration was the loss of my cat eight years ago.
Sad Cello Melody - Composed by rosmanczyk
http://www.youtube.com/watch?v=zwxLHqBDVNs&feature=related
Rain - Brian Crain
http://www.youtube.com/watch?v=mxX8279Onbo&feature=plcp
"It's Hard To Say Goodbye" - Michael Ortega
http://www.youtube.com/watch?v=aXVlQJ8eFgE
Eternal Love - Composed by blacksheep806
http://www.youtube.com/watch?v=qFL2xGrtEm4
Cover art by:
http://toxic-mario.deviantart.com/
The five character limit forced me to change Cadence to Luna, for obvious reasons.