Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 62. Chapters: Hammond organ, Rhodes piano, Mellotron, Electone, Pedal keyboard, Birotron, Optigan, Wurlitzer electric piano, Chamberlin, Electronic keyboard, Clonewheel organ, Digital piano, Continuum, Clavinova, Stage piano, Bass pedals, Electric grand piano, Pianet, RMI Electra Piano, Electronic piano, Clavinet, Multimonica, Keyboard bass, Clavioline, Tape replay keyboard, Curtis Organ, Rocksichord, Open-Architecture-System, AvantGrand, Yamaha PSR-225, Yongmei YM-490F.