limited number of Artisan Models annually, each available for order only during the calendar year in which it was developed. An example of a designer model is the Bösendorfer Swarovski Crystal Grand piano. Three of these special pianos were produced in 2003 in honour of Bösendorfer's 175th anniversary. Each piano's case is encrusted with 8000 crystals and layers of gold. Three notable architects who have designed Bösendorfer piano models are Theophil Freiherr von Hansen (1866), Josef Hoffmann (1909) and Hans Hollein (1990). There were only two Hans Hollein 225 models produced in 1990; one can be found in the lounge of the Grand Bohemian Hotel in Orlando, Florida. Bösendorfer artists Among the earliest artists to be associated with Bösendorfer was Franz Liszt, who at least once opined that Bösendorfer and Bechstein pianos were the only instruments capable of withstanding his tremendously powerful playing, although he purchased and officially endorsed Steinway & Sons pianos. The renowned twentieth-century American composer–conductor Leonard Bernstein has also performed on a Bösendorfer. Another great pianist who championed Bösendorfer pianos was Wilhelm Backhaus. In his memoirs, Arthur Rubinstein recounts having insisted on a Bechstein instead of the hall's Bösendorfer before a recital in Austria. After the performance, the then-head of the Bösendorfer company came backstage to meet this young artist who refused to play a piano highly cherished by his Russian namesake, Anton Rubinstein; Rubinstein claims he thereafter always sought out Bösendorfers when in Austria. Both Rubinsteins were Steinway & Sons artists and played these pianos when in the United States. In the late 1970s, following a concert performed in Vienna, jazz pianist Oscar Peterson turned to his impresario, Norman Granz, with the words: "Dammit, Norman, where does this box go? I also gotta have such a thing!" Such was his reaction to playing a Bösendorfer 290. Musician/comedian Victor Borge also played Bösendorfer pianos. More recent examples of notable artists who have played the Bösendorfer include Russian pianist Sviatoslav Richter (who in later years chose to promote Yamaha claiming it had a preferable pianissimo sound and control, according to his own interview); Hungarian pianist András Schiff; Austrian pianist Alfred Brendel; Italian pianist Arturo Benedetti Michelangeli; American free jazz pianist Cecil Taylor and American singer-songwriter Tori Amos; German pianist Wolfgang Rübsam; Austrian pianists Friedrich Gulda, Walter Klien and Paul Badura-Skoda; British pianists Leon McCawley and Mark Gasser as well as the Irish pianist John O'Conor. Ukrainian pianist Valentina