Best know for his work with super group Living Legends, the MC Eligh could still be conisdered underground. I think he should be crashing the pop charts and tearing them down the ground. His flow is brutal, and he could hold is own with any MC on the top ten. His lastest effort Grey Crow is a solid album. Highly recomened.
http://yesyesyall.org/files/music/13_Whirlwind_Ft_Pigeon_John.mp3