Welcome to the sunny side of Mahler. This symphony, his shortest, brightest, and most performed, leaves behind the brooding, tumultuous, and vast soundscapes of the others for blue skies and childlike innocence. The first symphony to end with a solo vocalist accompanied by orchestra, it builds to the final movement, which depicts “The Heavenly Life.” Soprano Julia Bullock joins the orchestra to sing these verses describing an innocent and serene view of heaven.