I've always enjoyed opera music but I had trouble understanding the words and the plot. This guide gives some background on the Opera's Composer (Verdi), some historical background as well as a letter but interesting summation of the plot. The two CD's that accompany the book Provide the complete audio of the opera. (Beverly Sills in the Gilda role and Sherrill Milnes in the role of Rigoletto) The Libretto Provides the text of the opera Both in Italian and English. I enjoyed this guide so much That I am hoping to collect the whole series.