Why? Because along with a certified classic of the DG catalogue (the Karajan/Janowitz Richard Strauss album), we are getting an early, distinguished Abbado outing in Tchaikovsky, plus the three legendary William Steinberg/Boston Symphony Orchestra records made for DG in the early 1970s. These are highly prized by collectors and with good reason. (Separate reviews of the Steinberg releases will follow in coming days).