Part 4 of 4 concluding the episode series celebrating Black History Month 2021 - Sam Cooke was very clear about what a Wonderful World he could imagine, but Ray Charles wanted to Wait Until the Midnight Hour (one of the first songs he ever recorded). Marvin Gaye talked to himself and made us want to ask, "What's Going On?" - these artists and their legendary contributions deserve celebration worldwide for Black History Month 2021.