When he was 18 years old he went into the Moscow Conservatory on piano in the class of Holʹdenveyzera Oleksandra Borysovycha. Kapustin remembered that the relationship with such a famous person affected him and his development as a pianist. By the way, Borysovycha was 82 years old at the time, and he could not to give good technical teaching to his student. During the work the teacher remembered the past a lot and told about interesting facts about composers (people who write music), shared his thoughts. Borysovycha was touched at how full of motion was the music of Mykoly Hirshovycha, what he could do with the piano, deeply respected and loved his student.