1) Austrian brand 
Bösendorfer (L. Bösendorfer Klavierfabrik GmbH) is an Austrian piano manufacturer, and since 2008, a wholly owned subsidiary of Yamaha. Bösendorfer is unusual in that it produces 97- and 92-key models in addition to instruments with standard 88-key keyboards. ==Characteristics== Bösendorfer pioneered the extension of the typical 88-key keyboar...