"Du bist mein Eigen"
The Lyric "Symphony" really is a hybrid between a song cycle and a symphony, and is as such often compared to Mahler's "Lied von der Erde", with which it shares other similarities too -- two alternating soloists (one male, one female), settings to eastern poetry, late romantic. But it completely stands on its own as a real masterpiece, and it's not obvious why this is so much less known than its famous cousin. This is wonderful music that draws you in from the very beginning, and a wonderful performance. ("Du bist mein Eigen / You are my own" is a quote from the third movement, and appears in Berg's Lyric Suite.)