This song by Richard Marx begins in Eb, and is later modulated to F in Part 5 of the video. Part 3 is the bridge, and Part 4 is the transition where there is no singing.
These are the “cheat” chords I played…
Part 1a: Cm7 - Ab/C - Bb
Part 1b: Fm7 - Ab - Bb
Part 1c: [...]
