BThe lack Dog Opera Library presents Giuseppe Verdi's Rigoletto featuring Beverly Sills, Sherrill Milnes and Alfredo Kraus. A marriage of music and the written word in the most complete and popularly priced package yet produced, each of these sets includes a complete opera on two Angel/EMI compact discs, accompanied by the complete libretto in its original language and English translation with annotated commentary. Full-color photographs illustrate the history of the operas, and an entertaining text discusses the musical heritage of the composers, the music and the performances.