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. Go to www.callas30.com for more info, because we can't describe 69 CDs!