Fun is Here to Stay

From Muppet Wiki

"Fun is Here to Stay" is a song by Sidebottom after he has hypnotized Junior Gorg into thinking he was a Fraggle and that he had taken over the Gorg kingdom. He was also going to give the Fraggles each a free bowl of bonkleberry stew, which would have been very bad for Wembley because of his allergy to bonkleberries.