Dr. Teeth and The Electric Mayhem firmly established as the regular Muppet pianist. Later performances mostly feature lead vocals by Floyd or Janice and only a few featured Dr. Teeth. His speaking roles got even smaller after his performer Jim Henson's death; an exception was the 1991 Muppets stage show "Muppets on Location: Days of Swine and Roses", the voice being performed by John Kennedy. He performed Dr. Teeth from 1991 to 2003 but made only very brief appearances with very little dialogue, some examples being the 1999 film "Muppets from Space" and once in the music video for the We Are Family charity song in
Dr. Hook & the Medicine Show and Cummings played and sang a few songs, Francis hopped up and danced on the mogul's desk. This meeting secured the band their first record deal. Subsequently, the band went on to international success over the next twelve years, with Haffkine as the group's manager, as well as producer of all the Dr. Hook recordings. Silverstein and Dr. Hook & the Medicine Show became a great combination. Haffkine, having a knack for picking songs, quickly became Dr. Hook’s #1 A&R man, as well as their producer and manager. Silverstein wrote all the songs for their self-titled debut album, released in