When The Beatles began recording Abbey Road over 50 years ago, They weren’t the same Beatles that they’d been before. The stresses of the contentious and seemingly never-ending Get Back project, the appearances of new love interests, the managerial struggles with Apple and Allen Klein, and Dick James’ divestment of their Northern Songs copyrights caused a wedge behind the scenes that threatened The Beatles’ future. And yet, in a few short months, John, Paul, George, and Ringo managed to recapture that magic feeling once again on their swan song LP.  In his…