About quality of sound and image no more should be said, just perfect.
However, about the atmosphere much is to be written. I was fortunate to sit in the concert hall during all the concerts, which were used for this recording. It is very easy : the apparently simplicity with which Abbado satisfies the audience for Mahler, allows an exceptional atmosphere in the concert hall : deep feelings, extremely good relationship between the orchestra groups, an elegant Mahler sound that nobody other than Abbado manages to create. The emotions that Abbado himself undergoes (just look at his face and gestures), are reflected in music. All this is shown phenomenally on this blu ray: it might sound strange, but almost the perfection of sound and images are obtained on this blu ray. For those who are less lucky, not being able to attend the concert, this blu ray disc will give a near live concert.
A must for every music lover, but certainly for the Abbado fans.