They're late this year, the little guys. Waiting for warmth, I imagine. We all are.
But who among us makes such music of our contentment?
If I read about peepers (and I think I did long ago) I would learn that their sounds are mating calls — not some existential expression of delight.
Still, after a long winter, in the just-dark of a warm spring evening, existential delight is what I hear.