In 'The Pearl' the song of evil appears in certain circumstances, for example, when the family is threatened or when malicious intent or dishonesty is sensed, and it accompanies the doing of bad things or dangerous natural events occur, such as dangerous insects. It is
' "the music of the enemy, of any foe of the family, '
In Chapter One, the Song of Evil threatens to swamp and snuff out the Song of Family, which marks the contentment in Kino's home life, and Kino knows he must become the master of his family’s future after fate seems to turn against them through an evil scorpion bite to his baby son.
He notices the the hanging box cradle seeming to move slightly and this is where the baby is sleeping. It's a scorpion crawling down the string dangling the box. He remembers the Song of Evil, the enemy music, as the Song of the Family tries to compete. He stands motionless, ready to grab the scorpion, but the baby rattles the rope and the scorpion drops down onto his tiny shoulder, biting him. Kino catches the deadly scorpion and manages to kill it while his baby cries with the pain of the poisonous bite, and his wife tries to suck the wound to reduce the poison.