Williams tells Vanity Fair that somebody, he doesn’t recall who, suggested that Kermit should give the song a try.
A new interview with Paul Williams, the writer of “Rainbow Connection.” reveals that when the song was being recorded in the studio, Jim Henson started by simply performing the song himself in Kermit’s voice.
Henson then took the Kermit the Frog puppet into the recording booth with him and performed the song with the world’s most famous piece of green felt.