Lewis Porter's bio of Coltrane is, so far, the best. After reading 4 bios of Coltrane, each new one more disappointing that the last, I've finally found a reliable source of facts. Mr Porter has done his homework: the chronology, at the end of the book, is worth the purchase alone. He does not get into interpretations, preferring to stick to the facts. He has also avoided the tendency to make Coltrane look like a saint, a tendency so common in other books about Trane. The musical analysis can be hard to follow if you're not familiar with musical theory, even though it looks as Porter has tried to make it as easy to understand as possible. This is the only biography of Coltrane worth reading.