The boxed set of Murray Perahia's recordings of all the Mozart Piano Concerti (Sony, 12 CDs) seems a terrific deal but when each CD is stuck in a tight cardboard sleeve that is impossible to open without smearing the disc with your fingers and then at least one (the second CD) has selections that end in mid-piece followed by a long series of skips it's no bargain at all! I have yet to play eight of them so it may be even worse than this!