Who completed Prokofiev's Cello Concertino with a Russian composer born in 1904?
Cello Concertino (Prokofiev): Sergei Prokofiev's Cello Concertino in G minor, Op. Cello Concertino (Prokofiev):  It was completed by Mstislav Rostropovich and Dmitry Kabalevsky.
i don't know