Bob Marley was a Jamaican singer and songwriter who became the biggest reggae musician of all time. A movie about his life and career will be released shortly. Trust me. It's really hard to pick out one song here. I could have picked 20. But I'll go with this feel good song, who's simplicity belies its impact. Here's Three Little Birds:
https://youtu.be/zaGUr6wzyT8?si=9YCjNaQ6jBnTkDcL