For Vinyl Scratch, the entire world isn't in color, but in sound. Yet for all her love of her musical art, she doubts her work at times. When Pinkie Pie's two sisters are due to visit Ponyville suddenly, Vinyl is the one who is to provide music for the welcoming party. Yet the need to create new music for the gathering brings up Vinyl's doubts and forces her to investigate what sisterhood might "sound" like. And as she encounters one of Pinkie's sisters, she learns that one's talents are a part of who they are. And that talent is not whether you do something better than somepony else, but if you love what you do and give it your all.