'A big read, stimulatingly rigorous, and an excellent follow-up from Williams's concise Life of Bach (2004).' Five stars, BBC Music Magazine
'The joy of this […] book is the human touch that underlines the title, a musical biography … Not only a fascinating read but brings a great composer and his art brilliantly to life.' Ken Walton, The Scotsman
'… the reader must be prepared to put in the hours to find these things. The going is not always easy, and the mixture of forensically researched and ingeniously practical considerations on which Williams bases his speculations are many and various, with many a tangent taken along the way. No doubt it is inevitable that a mind so crammed with Bachian detail should wander off the point from time to time, but the sheer accumulation of meticulously considered observations eventually makes its mark, leaving one in renewed wonder at this astonishing composer's compulsive intellectual drive, rumbling life-force and superhuman ability to move listeners with the sheer power of organised musical notes.' Lindsay Kemp, Gramophone
'Bach: A Musical Biography represents an important addition to Bach scholarship, and is a vital possession for the serious Bach enthusiast.' John Robert Brown, Classical Music