Crossword clues for Soulful Isaac:HAYESSoulful IsaacHAYESHot Buttered Soul IsaacSAYAHSoul singer Isaac reflectively replacing vitamin in nuts with vitamin in carrots; that's what a doctor (or a choirmaster!) might advise (3,2)HAYESSoul singer IsaacHAYESHot Buttered Soul musician IsaacHAYESSinger Isaac who cowrote "Soul Man"HAYESIsaac with "Hot Buttered Soul"STAXIsaac Hayes' "Hot Buttered Soul" label