Complex sentence: She also performed the rescheduled concert in Ufa on 7 March 2013.In 2009--2013, she is the main guest star of the international festival of military orchestras "Spasskaya Tower", held at the Red Square in Moscow.
Split into simpler sentences: She also performed the rescheduled concert in Ufa on 7 March 2013. From 2009--2013, she has been the main guest star of the international festival of military orchestras "Spasskaya Tower", held at the Red Square in Moscow.