Gimme a Reason takes classic albums celebrating major anniversaries and breaks down song by song the reasons we still love them so many years later. This week, we celebrate 50 years of The Beatles’ Let It Be. It’s become an iconic scene: The Beatles carrying out their last-ever live performance on the roof of Apple Corps, joined by keyboardist and general legend Billy Preston, their long hair flipping around in the London wind while they recorded live takes of songs like “Dig a Pony” and “Don’t Let Me Down” before eventually being shut down by the Metropolitan Police. The event was unannounced. Onlookers gathered on their lunch breaks, looking up at the midday sensation. This was the concert from which the final version of the Let It Be album would in part manifest, preserving takes of thr...