Completely ridiculous
Nothing rang true in this laughable film. Total amateur hour. How can a sensible person think that everyone around him not only shares his taste in music but wants to listen to it at any given time. I hated Keitel in that restaurant scene where he gets in a fight with a diner who just wants to enjoy his meal without music. When the audience hates the main character it's time to rethink the script, Mr Toback!
There is no "off" position on the genius switch.