Okay, here's the scenario: An object is rotating in space, let's say a cube.
If I were to travel at the speed of light away from the rotating cube, at the moment I interpret a point in its rotation...
Would the rotating cube actually appear motionless to me?
The same with sound:
If there's an object producing an oscillating sound, and I move at the speed of sound away from it
Would I hear a constant pitch? (assuming the sound waves never dissipate)