/DagnyTaggart hears /BrakemaN whistling the theme of a concerto. Whe she asks him what piece it's from, he says /HalleysFifthConcerto. When Dagny points out /RichardHalley only wrote four concertos, /BrakemaN claims he made a mistake and he doesn't recall where he heard the piece.
Later, after Dagny instructs the train crew how to proceed, he asks a co-worker who she is, and learns she is the one who runs /TaggartTranscontinental.
Part 1, Chapter 1, section 2 (/SectioN112) Part 1, Chapter 1, section 3 (/SectioN113)