Equestria is a colorful and magic land with talking ponies who sing merrily amongst each other throughout the day. However, is this music really from the heart, or is it just some natural ability that everypony is born with that allows them to randomly come up with catchy tunes without any rehearsal at all?

What happens when Equestria receives a new pony who has the inspiration to compose music that speaks to the heart in a way that hasn't been done in thousands of years?