In 2003, Nishimoto conducted the Russian Symphony Orchestra of the Tchaikovsky Foundation during their performance in Japan. It was this successful performance that led to her promotion to the Chief Conductor and Artistic Director in 2004.
Tchaikovsky Symphony was formed in 1996 with the collaborations by the members of the Tchaikovsky Foundation and the winners of the International Tchaikovsky Competition. In past, the orchestra has performed for Moscow Conservatory, concerts in Moscow, international music festivals, and "International Tchaikovsky Competition for young artists". They regularly schedule symphony, opera, and ballet concerts. They also participate in charity events and music education programs for Russian and foreign musicians.