The reviewer quoted one of those statements that makes no sense, yet sounds profound:
At the same time, both would probably agree with Theodor Adorno, who, in his essay Tradition, writes: ‘The difference between what is past and what is present … is not absolute. One can only understand Schoenberg if one understands Bach; one can only understand Bach if one understands Schoenberg.’
The part about understanding Bach only if you understand Schoenberg is the part that makes no sense to me. I guess that means Mozart, Haydn, Beethoven, Brahms, et al did not understand Bach? Maybe even Bach himself did not understand Bach?