This is the 9056th most frequent Russian word.
ростроповича
"Ростроповича" is not a standalone word but the genitive case of "Ростропович," a Russian surname, referring to something related to Mstislav Rostropovich, a renowned cellist and conductor.
Here, "Ростроповича" is used in the genitive case to indicate possession or association.
Я слушал концерт Ростроповича вчера вечером.
I listened to a concert by Rostropovich yesterday evening.
In this example, "Ростропович" is the subject of the relative clause.
Музыка, которую исполнял Ростропович, была потрясающей.
The music performed by Rostropovich was breathtaking.
Here, "Ростроповича" demonstrates the genitive case in a construction indicating dedication or naming after.