Lullaby For A Cutiemark

Moonsong singing to Sundancer.(both should have their CM but I'm Lazy.) They are step sisters of the same age.
Sundancer being a little younger caused Moonsong to be very jealous when Sundancer happened to be better then her at just about everything. Sundancer convinced Moonsong to sing to her then leading Moonsong to her cm. However when people began to notice her cm she had to hide it, to shy to sing for crowds of people. >.< ( I was also gonna put Luna in the clouds that I lazily didn't even add to the image. )