Complex sentence: The score is 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.
Split into simpler sentences: The score is inscribed "15 August--8 October 1943". It was premiered on December 1,1944, in Symphony Hall, Boston, by the Boston Symphony Orchestra conducted by Serge Koussevitzky.