Ludwig Bosendorfer of Vienna built concert grands 10 feet in length containing 8 octaves. Among the names of grand , grand pianos is that of Bosendorfer. The son, Ludwig, improved on the grand of his father by accepting modern ideas while keeping the Vienna tone. These pianos are preferred by leading virtuosos and ranks foremost in artistic pianos produced. The Emperor of Austria conferred highest honors on the younger Bosendorfer. The Vienna piano and organ makers have an association for themselves. Ludwig Bosendorfer is the only honorary member.