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