Kahn's stellar research for this volume on Coltrane's best known album, "A Love Supreme," is undermined by sloppy prose and lack of focus. Kahn does a great job showing just how powerful the album has been for generations of listeners, from Wayne Shorter to Bono. The biographical material on Coltrane is very good, but profoundly impersonal, skipping over key aspects of his life. The best part of the book is his meticulous documentation of the December 9 & 10, 1964 sessions that resulted in this album. Kahn describes the music with vivid language, and includes details about where Elvin Jones' drums were placed and how Rudy Van Gelder lit the studio to create a Jazz Club atmosphere for the performers. After that, Kahn's book loses focus. It's as if he had a 100 page manuscript, but then the folks at Penguin asked him to make it 250, and he had scratch around for any extra material he could find. His assessment of Coltrane's career post-"A Love Supreme" is very tepid, and the chapter on the legacy of the recording, especially from the vantagepoint of JOWCOL publishing, shows promise, but ultimately goes nowhere. Kahn's major problem here is that he doesn't know who his audience is. Is it for die-hard Trane-iacs, or is it for the casual listener that has "A Love Supreme" and no other Coltrane album? Some of this might not be Kahn's fault, as the content suggests this is for experts, but the formating of the book, with its wide margins and coffee-table book size, make it seem as if it's simply for show and tell in some bourgeois apartment. The book could have been better organized, more historically contextual, and filled with glossaries and footnotes for the more casual fans. Also, Kahn's lack of historical grounding makes it seem as though "A Love Supreme" was the only album released in 1965, and that jazz was the most popular music at that time, which is far from the case (just as it is today). Here, his homage to this wonderful album bleeds over into the realm of adulation. If this was a book for the "experts," it would be more critical of the album, instead of an all-out gush-fest. But Kahn's research must be commended (especially since he seems to be responsible for getting the December 10th performance of "Acknowledgment," with Davis and Shepp as added musicians, unearthed and onto the Deluxe Edition reissue of "A Love Supreme).