From the OST:
Anakin’s Dark Deeds
Not a theme.
Battle of the Heroes/Anakin vs Obi-Wan
That’s one.
Padme’s Ruminations
Not a theme.
Anakin’s Dream
Not a theme.
The Immolation Scene
Not a theme.
Anakin’s Betrayal
That’s one (arguably)
Heck, even General Grievous’ theme
And that’s the last one.