Miles Davis' electric period was not loved by the majority. But if you share a passion for what Miles came out with at that time, then there are two things you need to do. Firstly, listen to the complete sessions recordings, which are available on services such as Spotify, or you could buy them, and get to hear the wealth of excellence that eventually found its way onto the record releases after much editing, and secondly read as much as you can about what was going on.This well-written book helps the fan and/or historian acquire a good understanding of this amazing period in music that pioneered so many sounds and "feels' that persist to this day.