However, the very first time the prelude and its opening "Tristan chord" was heard publicly was on 12 March 1859, when it was performed at the Sophieninselsaal in Prague, in a charity concert in aid of poor medical students, conducted by Hans von Bülow, who provided his own concert ending for the occasion. Wagner had authorised such an ending, but did not like what Bülow had done with it and later wrote his own. Wagner then included the prelude in his own three concerts at the Paris Théâtre-Italien in January–February 1860.