I just received my copy of Herbey and the Berlin Boys performing the Beethoven symphonies. All nine on 6 hybrid SACDs isn't really squishing them too tight...but then I noticed that disc 6 is merely an "extra" disc holding a rehersal of the 9th. I looked through the discs and to my amazement found that one disk had the Eroica AND the 4th on it, for a total of 81 minutes 16 seconds. . The longest redbook CD I have holds something like 70 minutes. I haven't tried this but this disc is a hybrid and therefore must have a redbook copy too. How much can you stuff on a Sack-Dee?