Made for a composer challenge: Only chords rooted on A, B, C#, and F. Chords are:
Variation I
A - Bø - A/C# - C# - A - Bo - A - Bø - A - Bo - A - Fo - A - C#7/B - A - C#
Variation II
A - Bø - A/C# - C# - A - Bo - A - Bø - A - Bo - A - Fo - A/E - F7 - C#7 - A - C#7 - A
Variation III
A - Bø - A/C# - C# - A - Bo - A - Bø - A - Bo - A - F7 - A7 - Bo, C#7 - Fo, A7 - Bo, A7/C# - F7 - A - Bo - A - F7
Variation IV
A - Bø - A/C# - C# - A/E - Fmaj7 - A - A+ - Bø - F7 - Fo
Coda
A - Fo/A - A - Fo/A - A7 - Ao - A - Fo/A - A7 - F7/A - A7 - F7/A - A
The painting is by Monet: https://en.wikipedia.org/wiki/San_Giorgio_Maggiore_at_Dusk
