NEW JERSEY — Paul Shaffer is widely known as the former musical director of both "Late Night with David Letterman" and "The Late Show with David Letterman," and was often involved in skits and the general hijinks of the production.

However, as Shaffer recently tells TV host Steve Adubato, he wasn’t always comfortable being gregarious and, in fact, grew up being an introverted kid until a 1972 theater production forever changed his outlook. 

Steven Schwartz, composer of the musical, "Godspell," hired Shaffer to be musical director of the Toronto production, which starred many actors who later went on to become famous, such as Martin Short, Gilda Radner, Eugene Levy, Victor Garber and Andrea Martin. 

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“They influenced me. They seemed to be having such a good time being so outgoing, and I said I want to be more like that. I changed my whole personality because of them,” Shaffer said on the show, "One on One with Steve Adudato." 

Shaffer later went on to become part of the house band and occasional cast member of "Saturday Night Live." When he was hired by the "Late Night" producers, he was asked if he was the type of person who could play off of Letterman, and because of his past experiences, “I was ready to go,” he said.

To watch the entire interview on "One-on-One with Steve Adubato," visit: