Neither did TMBG. It's a cover of a song from an album of educational music from the late '50s. And the melody is a variation of the traditional song "The Gir

Neither did TMBG. It's a cover of a song from an album of educational music from the late '50s. And the melody is a variation of the traditional song "The Girl I Left Behind" (https://en.wikipedia.org/wiki/The_Girl_I_Left_Behind https://en.wikipedia.org/wiki/The_Girl_I_Left_Behind), which dates at least to the 17th century.