The phenomenally long-running PBS-TV series Sesame Street had a huge effect on American culture, not least of which would include pop music. As voiced by Muppet creator Jim Henson, Muppet character Ernie washed his way up to number 16 pop and number 36 adult contemporary with his ode to his "Rubber Duckie" during the summer of 1970. Kermit the Frog, who was also voiced by Henson, evoked strong empathy on "It's Not Easy Being Green" and sweet childhood innocence on "Sing" written by Joe Raposo. While appearing on the ABC-TV special Robert Young With the Young, the Carpenters heard youngsters perform the song. When they chose it as the lead single from their Now and Then album, their peers thought that they'd flipped. With the Jimmy Joyce Children's Choir doing background vocals, producers Richard and Karen Carpenter watched their darling cover of "Sing" go gold, reaching number three pop and number one adult contemporary for two weeks in the spring of 1973. It earned the duo Grammy nominations for Best Arrangements Accompanying Vocalists and Best Pop Vocal Performance By a Duo, Group, or Chorus. After receiving many requests, Karen Carpenter recorded a Spanish version of "Sing" titled "Canta." The Carpenters performed "Sing" on their ABC TV special which aired on April 26, 1980. The gold LP Now and Then also included the million-selling "Sing" from Sesame Street.