tune of "You've Really Got a Hold on Me" while being chased by the letter U. "Ugga Wugga Lullabye", sung by the horns-up side (Richard Hunt) of the Two-Headed Monster as a bedtime song while the horns-down head (Jerry Nelson) sleeps, music by Jeff Moss and lyrics by Tony Geiss. "Under Over Song", sung by four animated animals, with lyrics by Maxine Fisher. Animated by Michael Sporn. "Up and Down Opera", sung by Placido Flamingo (Richard Hunt) and Ernie (Jim Henson), written by Christopher Cerf and Norman Stiles. "Up and Down", sung by Herry Monster (Jerry Nelson) and Cookie Monster (Frank Oz), written by Jeff Moss. "Up And Down, Left And Right", sung by Joe Raposo. "Up, Down, In, Out, Over, Under", sung by Cecille "Up, Up and Away" (first aired 1970, episode 49) "Upside Down World", sung by Ernie and Bert from Follow That Bird, written by Jeff Moss. "Wait Right Here at The Bus Stop Sign", Sung by a group of Anything Muppets as they wait for their bus. "Water Course" and "Exchange", accompanying a short film showing how crayons are made. written by Richard Harvey. "Water Baby", sung/written by Joe Raposo over footage of seals and children swimming. "We All Sing With the Same Voice" written by J. Philip Miller and Sheppard M. Greene "Weaver Bird", sung/written by Joe Raposo over...well, y'know, a weaver bird. "We're a Family", accompanied film. "We Are All Earthlings" sung by an Anything Muppet (Jerry Nelson) and Elmo (Kevin Clash) with various animals, music by Jeff Moss and lyrics by Sara Compton. "We Are All Monsters" sung by four Muppet monsters, written by Stephen Lawrence and Tony Geiss; originally, Jerry Nelson played the red monster that would be later known as Elmo, with a low, gruff voice, but after Elmo was established as a major character, his lines were redubbed by Kevin Clash in later airings. "We are the Seven Dwarves" "We can all Be Friends" Sun by Big Bird, Elmo, Alan, Abby Cadabby, and Julia. "Wet or Dry", sung by Little Chrissy (Christopher Cerf) to the tune of "Black or White" by Michael Jackson, music by Christopher Cerf and lyrics by Sara Compton. "Wet Paint", sung by How Now Brown (Christopher Cerf) and the Moo Wave, written by Christopher Cerf and Jon Stone. "What am I?", sung by Will.i.am in 2010 "Which Come First (The Chicken Or The Egg)", sung/written by