Denise Duval, the celebrated French soprano, left an indelible mark on the world of opera and film, particularly through her collaboration with composer Francis Poulenc. Her role in "The Human Voice" (1971), a film adaptation of Poulenc’s poignant one-act opera, showcases her extraordinary talent in a visual medium, making it a coveted item among collectors. This film not only highlights her emotive delivery but also serves as a historical artifact of the fusion between opera and cinema. Duval's career spanned several decades, during which she created iconic roles in Poulenc's works, including Thérèse in "Les mamelles de Tirésias." Collectors value her recordings and performances for their authenticity and connection to 20th-century French opera's evolution. Her recordings, particularly those featuring her performances in "Dialogues of the Carmelites," are sought after for their emotional depth and historical significance, making Duval a revered figure in both the operatic and film communities.