Answer
Mykhailo Leontovych's compositions are primarily performed in Ukraine and by the Ukrainian diaspora. Leontovych was a Ukrainian composer, conductor, and music educator who is considered one of the most important figures in Ukrainian music history. His compositions are known for their rich melodies and harmonies, and they are often used to express Ukrainian national identity. Leontovych's music is still widely performed today, both in Ukraine and by the Ukrainian diaspora.