For a YouTube channel you've likely never heard of, "Little Baby Bum" sure holds a bunch ... compilation of children's songs entitled "Wheels on the Bus," has been viewed more than 1.9 billion ...

WITH over 21-million subscribers and 20-billion views, Little Baby Bum is nothing short ... Ring-a-ring 'o Roses and before that The Wheels on the Bus. They do get stuck in your head and of ...