Went to Boston Conservatory, studied music, didn't know who Meatloaf is? He actually belts the songs out and dominates the sound, much like Katherine does. They actually do make a good power-duo.
Katherine could do worse for inspiration than someone who has had loyal fans for over 20 years to perform with.
You don't fully appreciate how young she is and how old we are. It is quite extraordinary what information doesn't make its way to each new generation.