Der Stein der Weisen Tamino and Sarastro). "Der Stein der Weisen" may have provided a model for that work, as the two have a similar structure and source. The work was initially popular, but was largely absent from the standard repertoire for the two centuries after 1814, American musicologist David Buch announced the discovery of a Viennese score with attributions to all five composers. This was taken by some to indicate that "Der Stein der Weisen" was a previously unknown Mozart work, although in fact only a duet ("Nun liebes Weibchen", known as the "cat duet") and two sections of the act 2 finale
Piano concertos by Wolfgang Amadeus Mozart given by Cliff Eisen in 1997 is: Cadenzas to at least K. 466 and 467 also possibly existed. These cadenzas are part of the public domain and can be accessed here: http://imslp.org/wiki/36_Cadenzas,_K.624_%28Mozart,_Wolfgang_Amadeus%29 Piano concertos by Wolfgang Amadeus Mozart Wolfgang Amadeus Mozart wrote 23 original concertos for piano and orchestra. These works, many of which Mozart composed for himself to play in the Vienna concert series of 1784–86, held special importance for him. For a long time relatively neglected, they are recognised as among his greatest achievements. They were championed by Donald Francis Tovey in his "Essay on the Classical Concerto"