A Charlie Brown Christmas - Wikipedia, the free encyclopedia:
Network executives were not at all keen on several aspects of the show, forcing Schulz and Melendez to wage some serious battles to preserve their vision. The executives did not want to have Linus reciting the story of the birth of Christ from the Gospel of Luke; the network orthodoxy of the time assumed that viewers would not want to sit through passages of the King James Version of the Bible. A story reported on the Whoopi Goldberg-hosted version of the making of the program (see below) that Charles Schulz was adamant about keeping this scene in, remarking that "If we don't tell the true meaning of Christmas, who will?"
Another complaint was the absence of a laugh track, a common element of children's cartoons at the time. Schulz maintained that the audience should be able to enjoy the show at their own pace, without being cued when to laugh. (CBS did create a version of the show with the laugh track added, just in case Schulz changed his mind. This version remains unavailable, though unauthorized copies have appeared on YouTube.)
A third complaint was the use of children to do the voice acting, instead of employing adult actors. Finally, the executives thought that the jazz soundtrack by Vince Guaraldi would not work well for a children's program. When executives saw the final product, they were horrified and believed the special would be a complete flop.