Царь-бомба

Behold Tsar Bomba, which was detonated 45 years and one day before today. It was a completely gratuituous nuclear explosion that killed nobody as far as I know. At 50 megatons, it was the largest nuke ever. It could have been 100 megatons, but the engineers decided to turn it down to reduce the fallout.

Does anyone have any idea who the composer is for the film? I'm thinking Schostakovich, but I'm probably wrong.