The late, great Fred Willard couldn’t sing, and you can prove it by the lack of video clips showing him doing it. His brief vocal turn in “Waiting for Guffman,” as travel agent/community theater leading man Ron Albertson (with Catherine O’Hara as his wife/leading lady Shiela), reveals limits to both his range and his ability to carry a tune, but this scene — the couple’s audition, acted to a made-up coffee commercial featuring an exotic, travel-worthy location — displays his willingness to play the supporting doofus in a skit.
“This Bulging River,” the show-stopping tune of the movie’s play-within-a-film, “Red, White and Blaine,” again keeps Willard’s singing to a minimum, but he provides the scene’s payoff with the sidelong look he gives Christopher Guest’s Corky St. Clair at the very end of the scene.