The Phil Donahue Show was a standard format talk show like The Oprah Winfrey Show - one topic episodes. Guests ranged from an author, regular folks with issues, a celebrity, and on rare occasion, a musical artist. Phil Donahue loved featuring Broadway, so he would on occasion, showcase a new Broadway show, performer, etc. These clips you posted are just that - a showcase episode of Broadway musical artists. This wasn't a standard part of his show. His show the next day most likely could have been about teenage moms who hate their neighbors or it could have been the author of a new novel.