In terms of chords and melody, Etude in E double-flat minor is more complex than the typical song, having above average scores in Chord Complexity, Melodic Complexity, Chord Progression Novelty and Chord-Bass Melody.
Etude in E double-flat minor is written in the key of E♭♭ Minor. According to the Theorytab database, Minor keys, along with major keys, are a common choice for popular music. The three most important chords, built off the 1st, 4th and 5th scale degrees are all minor chords (E♭♭ minor, A♭ minor, and B♭ minor). See the E♭♭ Minor Cheat Sheet for popular chords, chord progressions, downloadable midi files and more!