|⇚ Prev Song||Next Song ⇛|
Sides (Causal, Normal Difficulty)
Sides (Hard Difficulty)
Sides (Mega Difficulty)
- Requires Rank 2 to be unlocked.
- The full song name is Impromptu D899#3-Y.
- This is the first song in the game to have a Level of 10.
- This is a reference to Franz Schubert's Impromptu in G flat major D899 No.3. 
- In fact, it is a remix of that song.
- The background effect of this song is the background changes colour, while the circles disappear and reappear.
- This is first song to be have 3 types of side track