The Steinway D has over 10,000 parts! Most of these are made from wood, wool, and other non-synthetic materials. Steinway pianos are also made mostly by hand utilizing time tested, old world techniques. The manufacturing standards are the highest in the industry and the materials used are of the best quality available anywhere in the world. And yet, no two pianos are alike and many artists moving from concert stage to concert stage have their "favorite D."