Misha Kolyada's interview with Olga Ermolina for the Russian Figure Skating Federation's website www.fsrussia.ru, here with English subtitles. The interview was taken at the Russian Test Skates (September 5, 2018).
I think he should venture into 2cellos for his song choices, but they tend to do the washed out covers of songs anyway so it would probably go to waste anyway even if he used it.