This book is an instructional manual for the care and maintenance of a player piano produced by the Baldwin Piano Company in 1916. It is divided into four sections, each of which addresses a different part of the instrument. Part one deals with the general structure and operation of a player piano and explains its resemblance to the operation of a human player. It also deals briefly with the installation and operation of the player apparatus. Part two deals with the bellows, regulating the checks, and operating tempo controls. Part three covers the cleaning and maintenance of pneumatic mechanisms, motors, valves, and expression pedals. Part four explains the testing, setting, and maintaining of player action. This reference work is an ideal resource for anyone interested in the history and mechanism of early 20th-century player pianos and offers a more comprehensive look at the subject than other similar works of its time.