Original: The piece was written in 1943 , the score being inscribed '' 15 August - 8 October 1943 '' , and it premiered on December 1 , 1944 in Boston Symphony Hall by the Boston Symphony Orchestra conducted by Serge Koussevitzky .
Simplified: The work was written in 1943 and it was first performed on 1 December 1944 in the Boston Symphony Hall by the Boston Symphony Orchestra with the conductor Serge Koussevitzky .