The Mendelssohn Choir and Pittsburgh Symphony Orchestra, with Maestro Manfred Honeck, close out the 2017-2018 performance season with the Pittsburgh Symphony Orchestra Premiere of Hector Berlioz's Te Deum.  The Te Deum was originally conceived at the penultimate piece of a symphony to commemorate Napoleon Bonaparte, but the finished product was dedicated to Prince Albert, Queen Victoria's consort.  The work was premiered in Paris in 1855,...