These artists not only have the abilty to spit, but they can vocally sing as well. They are a double threat that are dared to be matched. This is The Greatest Singers/Rappers Of All Time
http://www.ranker.com/list/greatest-singer-and-rappers/makumim,
André 3000
Bone Thugs-N-Harmony
Cee-Lo
Devin the Dude
Lauryn Hill
Missy Elliott
Mos Def
Pharrell Williams
Kid Cudi
Frank Ocean