2-chord progression
Song count per year
% of each member's catalogue with this tag (by writing credit)
as G7 → A7
as G → A7
as G7 → A7
as G7 → A
as G → A7
as G → A7
as G/B → A7
as G7 → A
as G/B → A
as G/D → A
as G → A7
Updated
Book
All the Songs
Margotin & Guesdon
Sheet music
Musicnotes – Beatles Piano/Vocal/Guitar
Musicnotes
Book
The Beatles: Complete Scores
Hal Leonard
affiliate link – supports this wiki