The trouble with writing the history of such a huge and wide ranging musical subject as Deep Purple is how to pitch the narrative; do you cater for readers who know little about the band or include that amount of train-spotter detail to capture the hardened fans who already know 'what happened next'....? Thankfully the author here has managed to come up with the right blend of authoritative detail and simple overall commentary. Thompson neatly avoids getting bogged down too much, with a narrative pace(or should that be Paice?) that fairly rattles along at times. His extensive knowledge of the subject shines through, and the few typos apart is a recommended biog of one of rock's most influential bands.