When Isaac Hayes is ready to start a concert, he sings his first song from offstage. Only then do the doors burst open, and a cloaked, bearded, shaven-headed figure strides forward, accompanied by four armed bodyguards ("You just can't be too careful with a man of this stature," says his manager). A black girl doing an "African dance of adoration" stops long enough to remove Hayes' orange, black and white cape, revealing him arrayed in black tights, fur cuffs, a leather vest and a necklace of gold chains.
He sits down behind the organ and launches into a jazz-styled number called Do...