Bored one day, Lyra and Octavia decide to ask their old friend Royal Riff if he would compose some musical arrangements for them--- an orchestra trio for Octavia, Symphony, and Concerto, and a harp/lyre duet for Lyra and Harpo. Riff accepts, although he has to study for his upcoming final exam. Harpo accepts Lyra's offer to play together, but then declines because he too has to study for the exam. Lyra tells Riff this and he suggests adding the lyre part to the orchestra piece. Struggling and frustrated, Riff asks Vinyl to help him finish his compositions for his friends. After completing the composition, Vinyl goes to talk to some ponies she knows, and gets the small ensemble the oppurtunity to play Riff's piece for the Canterlot Symphony.