"All dwarfs are bastards in their father's eyes."

About the "overused music", I believe that is kind of the point. It is a piece of music frequently used to give the appearance of sofistication – just like everything in Wilson's life. The walk-in closet filled with expensive suits; the expensive kitchen, in witch he prepares a very mundane dish with what seem to be…

Also consider the fact that Marina paid her a taxi (an "uber", whatever), just so she would be there at the party to be shown as an object.