Yamaha P121 SH3 Silent upright pianoIntroducing the Yamaha P121 SH3 Silent upright piano As the larger of the two Yamaha P Series models, the P121 is a very well priced, high quality upright that is designed with the European and British home pianist in mind. While 121cm tall and the same size as the b3, U1 and YUS1 models, it is a distinctly different instrument in both styling and tonal quality. Softer edges lend the piano a luxurious and elegant appearance, while the mellow voicing