Equally nice about the box set is the inclusion of multiple new recordings, thus making this a worthwhile investment for fans. The Peter Sculthorpe Quartets are a particularly nice addition, as are the added Piazzolla, Part, and Riley compositions.
Along with this, the "classic" Kronos recordings are all here: "Black Angels" "Different Trains" "Salome Dances for Peace" (well, exceprts), and Feldman's Piano and String Quartet. Of particular note, I think is the inclusion of Gubaidulina's Quartet No 4, a fabulous recording that is otherwise hidden in Kronos' recording "Night Prayers."
Yes, this is quite an investment, but I firmly believe that it's worth it - longtime fans and newcomers alike have a lot to gain from this collection.
There are probably more non contemporaries performed by the Quartet over the years than this selection would indicate. That undercuts their ties with the sense of revolution in music throughout the ages, but it leaves more time for the present: and that is where one expects the group wishes to be, is most contributory and challenged, and is best and most fairly judged. Highly recommended, both for those who know Kronos's work well and wish a handsome tribute on their shelf, and for those who do not but are open and ready to be affected, whether impacted esthetically, reminded socio-morally, or whatever combination of both befits.