He sent some of his own as yet unfinished works to Ustvolskaya , attaching great value to her comments .
On several occasions Shostakovich supported her in the Union of Soviet Composers against opposition from his colleagues .
Shostakovich sent some of Shostakovich 's own as yet unfinished works to Ustvolskaya , attaching great value to her comments .
On several occasions Shostakovich supported her in the Union of Soviet Composers against opposition from his colleagues .