This app is designed to help users enjoy music visually and support piano practice. By loading a MIDI file of your favorite song, the melody will gracefully descend onto the piano keys. This makes it easier to identify the correct keys without needing to read sheet music, offering great support for piano practice. Additionally, you can customize the shape and color of the melody as well as the background to match your preferences, allowing you to enjoy music visually as well. Notes: The animation may experience delays depending on your PC's performance. Sound playback may also lag depending on your PC's specifications. Some MIDI files may not be compatible depending on the MIDI sequencer used to create them.