Lost music of the forest

Don't believe in spirits, angels, gods or ghosts, but won't deny what I see or hear
I perceive that near it a tree nods, heavenly hosts singing so clearly in my ear
Walking toward it the sound diminished, fading off into only creaking trees
What had soared I found finished, evading fervent seeking, a harmonious tease in the breeze

If not the forest in a chorus, what could be this hymn so fervently sung
Only open field before us, but would a limb sing with heavenly tongue
Once again returned to the spot, where I had heard refrain before
And then discerned a note caught, in air its sad word again did soar