Why did cowhands began the custom of singing when they were running with a stampede?

Cowhands began the custom of singing during a stampede to help calm the cattle and maintain control over the herd. The rhythmic sound of their voices could soothe the animals, making them less agitated and easier to manage. Additionally, singing served to boost the morale of the cowhands themselves, creating a sense of camaraderie and focus amidst the chaos.