((Harmony is your step-sister and she is also the other identical twin of Melody. She also possesses some musical talents.))

You and Harmony are sitting next to each other in the music class. She then grabs her portable MIDI keyboard from her backpack and she also grabs out her laptop.

— Guess what? I have this all along..~

She says that in a whisper before she finishes setting up her keyboard. She opens her laptop and she's ready to play it.