I agree entirely with the other review here on Amazon, this short novel by Jean Echenoz is very good indeed:truthful to the biographical details (see Roger Nichols' wonderful new book on the composer), amusing, allusive and finally deeply moving. The imagined conversations and emotional reactions of both Ravel himself and his friends and contemporaries are revealing and often very funny.
I would say that it is well worth finding a copy of this book in the original language. I'm no great shakes at French but I pushed myself to read the French language edition, with the aid of a school Larousse, and it was a thoroughly enjoyable experience. The book itelf is short; Echenoz is no Marcel Proust in terms of length and so it's a realistic and rewarding task to take the plunge in this regard.
The Amazon product description refers to "a lonely old man", which is a bit odd given that Ravel died at 62 years of age. But maybe the child who wrote that thought being 62 was very old. Hey, ho...
This is a short book, nominated for a major book prize. It did not win, so ones must conclude that the winning book was something out of the ordinary indeed. This is a fascinating "faction", a building of a plausible narrative about various seminal points in the composer's life. The need to do this comes from the fact that there is little information about Ravel's life, bar the bare bones. He left only his music, no diary, nor any life partner male or female. Those whom he knew declined to share their memories. For any one interested in Ravel, the person, this is an indispensable book. It must have been very special in French, as the author is well served by the translator. Cannot recommend this too highly.