What are the three chords that McCartney plays on ?
Beginning players first learn open chords belonging to the major keys C , G , and D. Guitarists who play mainly open chords in these three major - keys and their relative minor - keys ( Am , Em , Bm ) may prefer standard tuning over many regular tunings , On the other hand , minor - thirds tuning features many barre chords with repeated notes , properties that appeal to acoustic - guitarists and beginners .