In terms of chords and melody, Twilight has complexity on par with the typical song, having near-average scores in Chord Complexity, Melodic Complexity, Chord-Melody Tension and Chord Progression Novelty and below-average scores in Chord-Bass Melody.
Twilight has sections analyzed in the following keys: D♭ Major, and F♯ Major. Click on the linked cheat sheets for popular chords, chord progressions, downloadable midi files and more!