Jose Mari Chan's "A Perfect Christmas" features a warm, jazz-influenced chord progression in E Major, often played with Major 7th, Minor 7th, and Dominant 7th chords. It relies on a light, swinging strumming style, with a distinct turnaround in the bridge that builds melodic tension. The song is best played with chords like Emaj7, G#m7, Amaj7, B7sus4, and F#m7.