"McCartney 3, 2, 1" is Hulu's engaging series delving into the Beatles' songwriting magic

Hulu's "McCartney 3, 2,1" is, quite simply, the most engaging documentary ever made about the songwriting exploits of popular music's most successful composer. Directed by Zachary Heinzerling — the filmmaker behind Beyoncé's "Self-Titled" web doc — the six-part series finds Paul McCartney and producer Rick Rubin deconstructing one great Beatles tune and McCartney solo composition after another.