Paul McCartney is seen discussing and dissecting The Beatles and his solo work with Rick Rubin in the new trailer for McCartney 3,2,1 – you can watch the clip below.The upcoming six-episode Hulu documentary series will see the legendary musician break down his music career in depth with the acclaimed producer.“In this six-episode series that explores music and creativity in a unique and revelatory manner, the documentary gives a front-row seat to Paul and Rick in an intimate conversation about