REDSOUND

Red diesel train makes exactly the right sound. Or perhaps
The note is colouring my visual perception? I hear before seeing, even though
Light travels faster. At water level sight is on the lowest
Fenland horizontal. Any bed of reeds can get in the way. But a blare
Travels the sky that joins me to it. So can a locomotive's multi-media signal

Seem to contradict the law of physics.
But what do I know? I'm only a poet.