In terms of chords and melody, Opoona - Twilight Town is more complex than the typical song, having above average scores in Chord Complexity, Melodic Complexity, Chord Progression Novelty and Chord-Bass Melody.
Opoona - Twilight Town has sections analyzed in the following keys: A♭ Major, and F Minor. Click on the linked cheat sheets for popular chords, chord progressions, downloadable midi files and more!