“The notes of the wood thrush and the sounds of a vibrating chord, these affect me as many sounds once did often, and as almost all should. The strains of the aolian harp and of the wood are the truest and loftiest preachers that I know now left on this earth. I know of no missionaries to us heathen comparable to them. They, as it were, lift us up in spite of ourselves. They intoxicate, they charm us. Where was that strain mixed into which this world was dropped but as a lump of sugar to sweeten the draught? I would be drunk, drunk, drunk, dead drunk to this world with it forever. He that hath ears, let him hear. The contact of sound with a human ear whose hearing is pure and unimpaired is coincident with an ecstasy. Sugar is not so sweet to the palate, as sound to the healthy ear; the hearing of it makes men brave.”
—From the Journal of Henry David Thoreau (1817-1862), December 31, 1853.
Here is the sound of a Swainson's Thrush, cousin to the Wood Thrush. The song is equally intoxicating.