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