Michael Rose has now published his long-awaited book, The Birth of an Opera: Fifteen Masterpieces from Poppea to Wozzeck. It is a distant descendant of radio broadcasts that he made fifty years ago. In it he discusses the origins of, and responses to, operas by fourteen composers (with Mozart being allowed two operas). The reviews have been very enthusiastic both in the UK and in the US; you can see examples in The Spectator and The Wall Street Journal.
You can find out here about another Michael Rose who lived in the neighbourhood.