Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Wonderful work on an obscure topic

To anyone who is old enough to remember hearing the original 'Telstar' on the radio, this is a wonderfully researched bio on the life and work of a vastly underappreciated godfather of audio engineering. Also being a huge Deep Purple fan, I was surprised to learn that the great Ritchie Blackmore, was a first call session player for Joe (as a member of the Outlaws) and that there are some enticing recordings he made that I now have to spend the rest of my life searching for!Great stuff. The equipment & discography are very well researched, in addition to the personal stuff. And you just can't beat the included disc of studio experiments, on the bizarre factor.