In terms of chords and melody, G-double-flat Major has complexity on par with the typical song, having near-average scores in Chord Complexity, Melodic Complexity and Chord Progression Novelty and below-average scores in Chord-Melody Tension and Chord-Bass Melody.
G-double-flat Major is written in the key of G♭♭ Major. According to the Theorytab database, Major keys, along with minor keys, are a common choice for popular songs. The three most important chords, built off the 1st, 4th and 5th scale degrees are all major chords (G♭♭ Major, C♭ Major, and D♭ Major). See the G♭♭ Major Cheat Sheet for popular chords, chord progressions, downloadable midi files and more!