I was first introduced to this book by my voice instructor about six months ago. It contains valuable information about many of the most commonly performed arias in the soprano repertory. Each aria is translated both word for word and idiomatically. A summary of each opera is given as well as measure-by-measure suggested staging. Suggestions are also given for the cadenzas. This book has really made a difference in how I perform some of my arias. I highly recommend it.