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