Once upon a time, in the land of Olympus, a baby named Mercury was born. He peeked out of his cradle and giggled, 'What fun is this world?' As he waddled outside, something shiny caught his eye in the grass. It was a tortoise-shell! 'Wow, look at this!' he exclaimed. His adventure of making music was about to start.

That night, under a sparkling moon, the mischief-maker wanted to have some fun. 'I want to have those beautiful white cattle!' he said. Stealthily, he snuck out and tiptoed to where Apollo's cows were resting. 'They won't see me coming!' he giggled to himself as he gently led away fifty heifers.

Once he finished his mischief, Mercury returned home, sliding back into his cradle. 'I’m the best cow driver!' he whispered to his tortoise-shell lyre. In the morning, however, Apollo noticed his cattle were missing. 'Where could they be?' he wondered, feeling a bit worried.

Apollo couldn't believe his ears. He followed the tracks that led to Maia's cave, where Mercury lay snoozing away. 'Aha! You little thief!' Apollo said, shaking his baby brother. Mercury sat up, yawning, 'Cattle? What are those?' he asked, playing innocent.

He strummed his lyre, and incredible music filled the room, making everyone listen in awe. Apollo's heart melted. 'Such music is worth even more than the cows!' he declared, leaving Mercury grinning from ear to ear. 'Here, take my lyre—it’s yours!','Apollo happily accepted the lyre and gifted Mercury a golden wand. 'You’ll have power over dreams and wealth!' he said. From then on, the two brothers became the best of friends, and everyone knew that Mercury was the herdsman of Apollo's beautiful cattle, wandering freely under the sunny skies.