 Also dating from this period are his cello sonata of 1949, and an unfinished concertino for cello and orchestra, later completed by Rostropovich and orchestrated by Kabalevsky.Cello Concerto in E Minor, Op.58

Note that cellist/composer/conductor Roger Albin (1920–2001) was the first to record the complete, uncut original score.Symphony-Concerto, Op.125