Paul Shaffer takes Marc down the path that turned a piano-playing kid from Canada into a keyboard-for-hire who became the bandleader for the famous Toronto production of Godspell. And from there, the dominoes fell, as Paul joined the SNL band, the Blues Brothers band, the Rock and Roll Hall of Fame house band, and the band for David Letterman's show, which turned into a relationship that lasted for 33 years. This episode is sponsored by The Comedy Jam on Comedy Central, Kabbage, Stamps.com, and Blue Apron.