In terms of chords and melody, Pineapple Rag is more complex than the typical song, having above average scores in Chord Complexity, Melodic Complexity, Chord Progression Novelty and Chord-Bass Melody.
Pineapple Rag has sections analyzed in the following keys: B♭ Major, and E♭ Major. Click on the linked cheat sheets for popular chords, chord progressions, downloadable midi files and more!