Aaliyah (1979 - 2001). She was so musically ahead of her time that artists are still trying to catch up (especially her last album). It's crazy how one artist can be so influential outside of their own genre. In addition to her shaping modern R&B, her music inspired artists like The xx, Maroon 5, Adele, The Weeknd and many more. I'll always appreciate her smooth and haunting vocals. Definitley one of my favorite voices.