Spencer Williams on Instagram: "Paul McCartney’s Creative Truth 1: Dare to sound foolish. During a 1978 interview on The South Bank Show, Paul McCartney was trying to explain where songs come from. The interviewer, Melvyn Bragg, listened as McCartney demonstrated, “You can do it any time. This will probably be crummy, but you can just—” He began singing, “Melvyn Bragg, was in the parlor, and he said that he was going to have some tea…” Laughing, he said, “I mean that’s not very good, but you cou