One of my favorite voices of all. I really enjoy Cape Verdean music, and go to a local restaurant that features Cabo Verde cuisine [polvo, baby, polvo!] and live music almost nightly. It's called the Ten Rocks, on the Provdence-Pawtucket line.
Cesaria Evora's [last name's stress on the E] voice gives me goosebumps, and it soothes at the same time. Billie Holiday's voice was like that. It makes you enjoy just about any song they would sing.