To celebrate the anniversary of Help!, released this month in 1965, I talked with Steve Matteo. Matteo’s 33 1/3 title on Let It Be had a big influence on my 2011 Lennon biography, and his new book, Act Naturally, talks to fresh sources who worked on these projects. Turns out A Hard Day’s Night features the same cinematographer, Gilbert Taylor, who had just finished filming Stanley Kubrick’s Dr. Strangelove. I started by asking Matteo why he chose the Let It Be album as his first book-length project…
