Your question makes me recall one of the sweetest things I ever heard. I was in a department store dressing room, and Ziggy Marley's "Family Time" started playing on the piped in music track. There was a tiny little voice, perhaps 3 years old, in a nearby dressing room that started singing along, word for word, the entire song. Time stood still while I listened, is was so precious.
Ziggy Marley's "Family Time:"