On the sunbaked earth of the savannah, kudus and zebras, giraffes and lions move slowly through the hot African day, looking for shade, leaves to nibble, a resting place. Everything is quiet. But when the sun sets, a cool time settles on the savannah and the song begins. Puh-tuh. Puh-tuh. Puh-tuh,drum the zebras with their hooves. Vroo-oot. Vroo-oot. Vroo-eet!trumpet the elephants. And the lions roar Grr-mrow-ool!Like heat, their cool time song rises...