This song by Faith Hill begins in Bb, and gradually modulates to C and then to D. Part 4 is when the song is in C; Part 5 & 6 are in D.
The chord in brackets is transitional.
These are the “cheat” chords I played…
Part 1a: Bb(add2) - F/A - Eb/G - F/A
Part 1b: Bb(add2) - [...]



