Throughout the 60-year span of his collaboration with the Berliner Philharmoniker, Daniel Barenboim has never conducted the music of Gustav Mahler. Until now. Two late works can be heard, beginning with the expressive Adagio from the unfinished Tenth Symphony. Painful melancholy prevails here, as it does in Das Lied von der Erde (Songs of the Earth), which looks back on the lost beauty of life. Formally located between a song cycle and a symphony, this work was, according to Mahler, “probably the most personal thing I have done so far”.