It's pretty simple-this boxed set contains EVERYTHING La Divina recorded in the studio, including newly-licensed and newly-remastered material! That's the first 69 CDs; the 70th CD is a CD-ROM containing the tracklists and photos. And the set comes inside a hardcover slipcase containing a color booklet packed with even more photos of this most photogenic of opera singers. As for the contents, well, again, it's EVERYTHING she did in the studio.
This unique 70CD box set includes all the studio recordings Maria Callas ever made. It contains 26 complete operas, four of which are studio repeats, plus the complete studio recitals made during her recording career, from 1949 to 1969.