The YDP-S51 is a digital piano that delivers genuine tone and provides for realistic performance in a compact size. The designs of many compact digital pianos on the market today sacrifice the feel of the piano in favor of what makes sense in terms of cost and size. We strove to make the YDP-S51 project the elements of a piano when the lid is open but assume the appearance of a simple, modern piece of furniture when the lid is closed. The most important part of the design process was creating a high-quality performance environment for pianists. We paid close attention to the many factors that go into creating such an environment and captured the natural piano feel so that pianists can concentrate and play naturally. We considered how pianists handle piano lids and the shape and spatial relationships created when the lid is open, and we kept only the vital elements of the piano. By doing that, we were able to recreate the performance environment of an upright piano in a digital instrument just 30 inches deep. We also pondered the piano’s appearance when it not in use, employing a straightforward, linear design unlike any before it. The piano goes well with other furniture and takes on a subdued presence when the lid is closed. This creates a contrast: the nobler functions are hidden in favor of meshing with the pianist’s everyday persona, yet provides glamour and evokes a special feeling when it is time for the pianist to play. We think more about what makes a genuine piano than about the convenience and rationality of a digital piano. This is consistent with the way we make Yamaha pianos — pianos that are the real deal, whether they are acoustic or digital.