The Neptunes/Krayzie Bone Ft. Kelis "I Don't Know What" from Krayzie's second album "Thug On Da Line". (Hard album to find, rare collaboration between Bone and Neptunes) This is circa 2001, and I prefer The Neptunes sound of those years. The chorus/hook is sung by Kelis, and it's the first song produced between Bone Thugs and The Neptunes. Rate&Comment! *extra tags* b.o.n.e bone mo T.H.U.G.S thugs thugz -n- n harmony btnh krayzie layzie bizzy wish flesh flesh-n- ruthless new remix original unreleased 2008 2001 nerd pharrell williams chad hugo shay haley kelis rogers instrumental crs spymob billionaire boys club funk rap hip-hop hip hop song single debut rare music soul