A forest on a spring morning is a well-orchestrated polyphony. Robins and red-winged blackbirds pour their joy out trying to outsing each other for the role of a lead soloist. Woodpeckers keep the rhythm with their insistent staccato. Cuckoo birds join this celebratory chorus with a melodic refrain. Nothing is jarring; not a single note out of place. Even the shrill caws of grackles don’t produce dissonance but rather serve as interludes between other parts.