Mario del Monaco sings arias by Puccini, Giordano and Meyerbeer recorded in the late 1940's; Mirella Freni sings Mimi from a 1963 performance of La Boheme; Lucianno Pavarotti sings Edgardo in the final scene of Lucia di Lammemoor, a role he did often early in his career, and Maria Callas recorded Isolde when she was 26, included in her "first official recordings."