"Cavalcade" at 6 p.m. welcomes author David Sheff, presenting his new biography Yoko. David joins at 7 p.m. to offer a glimpse into the Yoko Ono we don't know, and to tell the tall tales anew.

The truth of the matter was that, really, quite inconceivably, Lennon was theoretically unemployed after a string of lacklustre efforts had meant his contract with Capitol Records had expired and not ...