Question: What trio sang "Where have all the flowers gone"?
Answer: Peter, Paul and Mary
Peter Yarrow, Paul Stookey, and Mary Travers started as a trio in 1961. They signed with Warner Brothers and released their first album in 1962. They are known for their folk songs with a message. They remained together, remained with Warner Brothers, and continued to produce music and tour into the twenty-first century.
Mary Travers passed away 1n 2009. Ars Longa, vita brevis.