Guess the 1960s song lyrics #284

*First line is the trio name. 1960. This was a one-hit wonder for this trio who met at Adelphi University. They broke up in 1961. They each went on to have successful careers in music and publishing. In this song, they sing about a certain popular cartoon bear. The bear made his debut in 1958 and got his own show in 1961. The bear was based on Art Carney's character, Ed Norton, on The Honeymooners.