In terms of chords and melody, I Can't Get You Off My Mind has complexity on par with the typical song, having near-average scores in Chord Complexity and Melodic Complexity and below-average scores in Chord-Melody Tension, Chord Progression Novelty and Chord-Bass Melody.
I Can't Get You Off My Mind is written in the key of G Minor. According to the Theorytab database, it is the 6th most popular key among Minor keys and the 14th most popular among all keys. 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 (G minor, C minor, and D minor). See the G Minor Cheat Sheet for popular chords, chord progressions, downloadable midi files and more!