Reviews of the German edition:

Not only does Sandner's knowledge include an overview of Jarrett's own work and the history of jazz, from which source Jarrett's artistry streams; but it is wide enough to include the whole history of culture into which his music flows. Wolfgang Sandner does more than sort Jarrett's recordings into categories of jazz, musical and cultural history, he invites the reader to a new and deeper listening experience and paves the way for an understanding that exceeds the purely emotional.
Wolfram Knauer

Wolfgang Sandner has brilliantly disproved the notion that writing about music is as impossible as dancing architecture.

Sandner is exactly the right person for this meticulous and pioneering task. His perceptions are as wise and well-informed as they are enthusuastic and unerring.
Die Zeit

One is inclined to describe Sandner as this pianist's verbal alter ego. Like Jarrett, the cosmopolitan Sandner digs deeply into the material, displays virtuosity in comparisons taken from the spheres of art and cultural history, and can get as much caught up into hymnic Gospel fury with his meticulous characterizations as the great man does at the piano.
Die Welt

Wolfgang Sandner's book, however, is quite different. Naturally, it touches upon the most important matters in life, but, above this, the writng is musical in the poetic sense. It seems as if the language of this book has been adapted to match the pianist's own style.
Süddeutsche Zeitung