|Music by||Philip Balsam|
|Lyrics by||Dennis Lee|
"Convincing John" is, appropriately enough, the "theme song" of Convincing John, sung by the Fraggle himself and the Fragglettes in the Fraggle Rock episode "The Preachification of Convincing John." He first sang this song as a way to convince Fraggles not to eat Doozer constructions, and later sang it as a way to encourage eating Doozer sticks. In one verse, he tells them if they eat Doozer sticks, they'll get a tummy-ache.
He sang this same tune again in "The Secret of Convincing John," where its title was changed to "A Tiger and a Terror," reflecting the new lyrics meant to convince Wembley to stop wembling and be definite. In this incarnation, the song's lyrics were written by B.P. Nichol.