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