In addition to the musical objects she creates, Sarah Davachi is also immersed in the theoretical issues that surround her practice. Papers positions historical and technological conclusions to face their philosophical underpinnings.

Two of the essays dissect sympathetic compositions: Natura Morta by Walter Marchetti and In A Large, Open Space by James Tenney.

The book concludes with six artifact studies: an Italian virginal, a Bosendorfer piano, the Novachord, the Mellotron, the modern harp, and the OSCar synthesizer. Comprehensive details of their development, mechanisms, and cultural significance.