The Chicago blues Humbucker set is based off of PAF outputs and magnet grades, with a magnet wire that gives a little creamier mid and upper low response. Rich and creamy when driven, they clean up well to give a very rounded EQ response. Ideal for blues, but works well with other rock and country styles too. The richer mid response with the neck pickup gives a very smooth rhythmn tone that will work excellently for Jazz as well. Very Versatile!