the russian composer anton safronov completed the scherzo sketch and created a new finale for the symphony (some themes of the latter based on themes from several schubert piano works), which he described as "an attempt to move into the mind of the composer". his completion was performed at the royal festival hall in london on 6 november 2007 with the orchestra of the age of enlightenment, and on 2 october 2007 with the russian national orchestra (followed by the american tour in the early 2008,) both performances conducted by vladimir jurowski. due to his unusual use of material from schubert keyboard works in the finale, safronov's completion has been subject to criticism varying from definitely positive to ambivalent and negative.)