In the '70s you heard her in Chaka Khan and Roberta Flack; in the '80s and '90s, you heard her in Mariah Carey and Whitney Houston; today you hear Aretha in everyone from Beyoncé to Ariana Grande. Blessed with one of pop's most powerful voices, Franklin's natural fusing of gospel and R&B made her one of the most influential (and successful) soul singers in the world. Here's a roll call of singers that owe her a debt of gratitude.