Christopher Cerf

Christopher B. Cerf (born August 19, 1941) originally joined the Children's Television Workshop as the head of Sesame Street’s "non-broadcast" products division, which spun off books, records, and toys. However, Cerf's true forte was composing songs for the show, including parodies of contemporary pop hits.Lambert, Craig. "Channel Cerfing." Harvard Magazine, July 2011. Among his best known works are "Put Down the Duckie" and "Monster in the Mirror," two collaborations with former Sesame Street head writer Norman Stiles. Both songs have been filmed in versions that feature large numbers of celebrities.
Cerf also contributed vocals for many of his songs. He was the voice and namesake of Muppets Little Chrissy, the lead singer of the Alphabeats, and Chrissy, of Little Jerry and the Monotones. Other Muppets Cerf voiced included Bruce Stringbean. Cerf also sang on the Cecille theme song.
Cerf's non-Sesame Muppet work includes development on the software projects Muppet Learning Keys and Muppetville, and consulting and composing music for the short-lived series, Little Muppet Monsters.
His father, Bennett Cerf, was the co-founder of Random House books and a panelist of What's My Line and his mother, Phyllis Fraser, co-founded Random House's Beginner Books with Dr. Seuss. His brother, Jonathan Cerf wrote songs in Letter People
Cerf is also the co-creator and an Executive Producer of Between the Lions.
In December 1982, He married a singer Molly Cerf who is best known for Miss Blue. They have children named Frederica, Sally, Tracy, Frank, Simon, Christopher Jr.