They've all got at least a little of it, whatever you call it. Note: Not ranked by how good they are, just ranked by how much of it they have from most to least.
  1. Iris Dement
  2. Gin Wigmore
  3. Cat Power
  4. Grace Vanderwall (I can't get over this kid)
  5. Regina Spektor
  6. Cyndi Lauper
  7. Emmylou Harris
  8. Karen O
  9. Suzanne Vega
  10. Yael Naim
  11. Kelly Clarkson
    [no link because I'm not really a fan but she's definitely got some of it]
  12. Dolores Keane
  13. Zella Day (Arizona represent)
  14. Patsy Cline
  15. Neko Cases