This song by Atilia is an OST from Talentime. The key is F#.
These are the “cheat” chords I played…
Part 1a: F#2 - C#/F - D#m7 - D#m7/C#
Part 1b: C#/F - B2 - Bm6
Part 2a: D#m7 - D#m7/C# - C#/F - D#m7 - Bm/D
Part 2b: D#m7 - D#m7/C# - C#/F - C#m/E
Part 3: D#m7 - F#2 [...]
