There’s two versions of Revolution the faster version which you find on the Blue album 1967 - 70 and Revolution 1 which is on the White Album.
The first is faster and possibly speeded up so the key falls between B and Bb. The White album version is slower and is played in A.
Playing the John Lennon guitar part in A is quite simple. The verse and chorus are based on an A D E chord progression.
The pre chorus in Bm E Bm G A F# E
In the notes I’ve included both versions of the intro as they differ slightly
The George Harrison guitar part I’ve not included plays the riff an octave higher. I have though included an interesting fill from the White Album version
