First -- it appears that Amazon is selling two editions of the same program.  This disk appears to have been issued by NVC arts with a date of 2002 and there is also a Kultur issued disk dated 2011 with essentially the same cover art.  The NVC art disk is being sold for $39.95 and the Kultur disk is being sold for $19.99.  From the other product information provided it appears that the program content is the same on both disks.  However since I have only watched the NVC arts disk I can provide no information about the quality of the Kultur disk or if the programs are actually identical.  The NVCarts disk comes with a fairly detailed booklet providing information about each performance and a multipage introduction in English, French and Spanish.