Peter Yarrow is an American singer and songwriter who found fame with the 1960s folk music trio Peter, Paul and Mary. Yarrow co-wrote (with Leonard Lipton) one of the group's greatest hits, "Puff, the Magic Dragon". He is also a political activist and has supported causes that range from opposition to the Vietnam War to the creation of Operation Respect, an organization that promotes tolerance and civility in schools.
Murry Sidlin is the President and Creative Director, Defiant Requiem Foundation Murry Sidlin, a conductor with a unique gift for engaging audiences, continues a diverse and distinctive musical career. He is the president and creative director of The Defiant Requiem Foundation, an organization that sponsors live concert performances of Defiant Requiem: Verdi at Terezín and Hours of Freedom: The Story of the Terezín Composer, as well as other projects including the documentary film, Defiant Requiem, and The Rafael Schächter Institute for Arts and
Humanities at Terezín. Additionally, he lectures extensively on the arts and humanities as practiced by the prisoners in the Theresienstadt (Terezín) Concentration Camp.