By The Conversation. Michael Jackson sings during the opening performance of a 13-city U.S. tour in 1988. AP Photo/Cliff Schiappa To commemorate African-American Music Appreciation Month this June, California Senator Kamala Harris released a Spotify playlist with songs spanning genres and generations, from TLC’s “Waterfalls” to Marvin Gaye’s “What’s Going On.” In a nod to the…