The International Outdoor Opera Festival is a traditional part of the City Day, celebrated every August 30. The National Symphony Orchestra of Tatarstan has hosted the festival since 2011.
No fee is charged for entry to the festival grounds. Thousands of people fill the plaza outside the Agricultural Palace, where the concerts are played. In the past years, Kazan has seen some of the world's top opera singers perform at Kazanskaya Osen (Kazan Autumn) Festival, such as Dmitry Khvorostovsky, Roberto Alagna and Lubov Kazarnovskaya. The world premiere of the opera White Wolf, composed by Zulfiya Raupova and written by Ruzal Mukhametshin, took place at the 2013 festival. The repertoire often sounds familiar even to those with limited knowledge of classical music. It usually includes the more popular opera arias or operetta tunes.