The phrase identifies a selected music title coupled with the performing artists and a descriptor of its textual part. The phrase refers to a folks music popularized by the American folks group Peter, Paul and Mary, and to the written phrases that comprise the music. The music itself is a lullaby, usually used to assuage and luxury.
This particular mixture serves as a robust identifier. It permits people looking for the music to rapidly find the proper model and lyrics. Its historic context locations the music throughout the American folks music revival of the Nineteen Sixties, and hyperlinks it to the social and cultural influences of that period.