One of the most legendary conductors of the twentieth century, Charles Munch was, with Pierre Monteux, certainly the greatest French conductor. After a long activity in France, Munch then moved to the United States, becoming an American citizen and reaching the apex with the conduction of the Boston Symphony Orchestra, with which he recorded a large number of performances, especially symphonies, published by RCA. These 2 albums represent an important document of some live concert versions of his American activity and are completely unpublished. The sound quality is excellent.