Atlas Shrugged, Part 1, Chapter 1, section 2:
Dagny is riding the Taggart Comet back to New York after inspecting the Rio Norte Line. She hears a brakeman whistling an unpublished piece from her favorite composer,
/RichardHalley, but the brakeman refuses to acknowledge this or say where he heard it. After falling asleep and waking up, Dagny discovers the train has come to a stop at a siding. She finds the train crew passively waiting instructions, and gives them orders on how to proceed.
Taggart Comet, stalled between Cleveland and New York.
/BrakemaN
/ConductoR - First and only appearance.
/EngineeR - First and only appearance.
/DagnyTaggart
/OwenKellogg - Mentioned.
/PassengerNumber1 - First and only appearance.
/PassengerNumber2 - First and only appearance.
/RichardHalley - Mentioned.
What was the brakeman whistling? Did Halley write a Fifth Concerto?