If you are considering this you probably are aware of Klemperer's reputation. I don't know that Klemperer would be my first choice for Mozart but these are wonderful recordings. The symphonies and overtures will be more muscular Mozart than you are used to, and the orchestra will be larger than the current trend, but you will hear a different side of the composer - I don't know if darker would be the right word here. Klemperer's vision of Mozart is not bleak but it is not as light (if that is the word I want) as he is often played. Klemperer's version has a Mozartian charm, when appropriate, but I, at least, am left uncertain sometimes whether Klemperer understands the humour. This is not a criticism because the resultant ambiguity made me enjoy the performances all the more. A wonderful, and faithul, contrast to the versions in your library. Worth buying. In fact, worth buying many of the Klemperer boxes EMI are currently releasing; they make fascinating listening.