On February 9 1964, The Beatles performed on the Ed Sullivan show for the first time. For those who tuned in to watch – from fans to future rock and roll greats – it was a life-changing experience.

When the Spoonful arrived in London in April 1966 ... of which are still delightfully apparent in clips from “The Ed Sullivan Show” and the 1965 concert film “The Big T.N.T. Show ...