On Sunday, September 13, the Verzuz battle series—which you can watch right here on Apple Music—celebrates two of soul music’s most iconic voices. Gladys Knight and Patti LaBelle are two singers who’ve stood next to each other onstage countless times over the course of their careers (perhaps most notably as two of the first people VH1 would call on when it was time for their Divas Live concert series). Their voices are warm and affecting in different ways, each having spoken—both separately and in collaboration—to the experience of Black women in America directly over several decades. They are accomplished actors and absolutely legendary singers, with 35 Grammy nominations between them. It was hard to believe them when they sang “I'm not your superwoman” on Knight’s 1991 album Good Woman—and it will be even harder to believe them today, running through multiple lifetimes' worth of hit songs on Sunday, September 13, live from Philadelphia, LaBelle's hometown. Revisit two catalogs containing some of the most beloved soul songs of all time with the official Gladys Knight x Patti LaBelle Cheat Sheet playlist, as curated by Apple Music host Lowkey.