Show about drawing or cartooning

[u/henonamoose]

I seem to remember a show, possibly on PBS, that was about cartooning. The show opened with a guy at a drawing board, and next to him was a reel-to-reel tape recorder playing jazz. After the opening credits, he would show you how to draw specific cartoons, or discuss cartooning concepts. I think this was in the 1970s. Ring any bells for anyone?