In terms of chords and melody, SOURCE 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.
SOURCE has sections analyzed in the following keys: G Minor, and D Minor. Click on the linked cheat sheets for popular chords, chord progressions, downloadable midi files and more!