To mark the 50th anniversary of Shostakovich’s death, DG has released an album of world premiere recordings and rarities featuring violinist Gidon Kremer, violist Nils Mönkemeyer, pianists Daniil Trifonov and Yulianna Avdeeva, Kremerata Baltica, the Dresden Staatskapelle conducted by Thomas Sanderling, and others. Most of the pieces were recorded at the International Shostakovich Festival in Gohrisch, the world’s only annual …