Using the theme of musical instruments as a conducting thread, Gerard Bassols takes us on a journey through the history of progressive rock and shares with us a multitude of anecdotes and curiosities, both of the instruments themselves and of the bands and musicians of the genre, and of the music they have left us for posterity. From the birth of the Mellotron in 1962 to the most recent keyboard instruments, from the beginnings of solid-body guitars to carbon-fibre ones, passing through drums and percussions, harps, saxes and sound effects, Bassols makes an exhaustive review of all the musical instruments of the modern history of rock music, and especially of those profusely used by the most legendary progressive rock bands like King Crimson, Emerson Lake & Palmer, Yes, Genesis, Rush, Pink Floyd, Dream Theater and many more. With more than 500 photographs and illustrations, this is a unique work of its kind, without a doubt the most comprehensive treatise ever published about rock musical instruments. Bassols achieves a perfect balance by deepening on the topics he touches, but always in an accessible language, so this book will undoubtedly be liked by both professional and amateur musicians, as well as rock music enthusiasts, without having to have any previous knowledge of music theory or technology.