Theoretical Key has higher complexity than the average song in terms Chord-Melody Tension.
About The Key Of G♭♭ Major
Theoretical Key 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!