“Do nymphs still play
In woodland glades today
And the sunlight gleam
On pristine stream,
Where Flighty Aphrodite
Goes dancing and romancing?”
I asked Christine.
She made reply,
With a sultry look, in her one good eye,
“I aim to please
But the pollon makes me sneeze
So no rolling in the hay
For me today”.
Christine is such a tease …
K Morris - Poet 
The question posed in this fine verse, has long perplexed philosophers, compare the nymphs with trees whose sound, will not be heard when they hit the ground, without witnesses.
Thank you for making me smile! Best wishes – Kevin
Reader’s smiles are generally bottled up smirks when reading my vague attempts at verse.