Where the Party At 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!