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