Many cultures have viewed the lunar eclipse as a powerful reminder of the Day of Judgment. People chant prayers, sing songs and recite poetry, all in an effort to communicate with nature and the cosmic forces in the sky. They ask for forgiveness or understanding, as they yearn for what they fear is lost. “Deyzangeroo” is one such ritual, performed in the Iranian port city of Bushehr, on the shores of the Persian Gulf. The distinctive percussive music, rhythmic chants and tribal dances—an echo of the city’s colonial rule by the British and P...