How Earth-Like of us Humanoids

imageI had a lightbulb moment while watching a close up on TV of a vibrating string during a musical performance. It’s really all about air, isn’t it?

I wonder if the air swirling around Bach back in the 1600’s was slightly different than our 21st century air vibrating in today’s concert halls? Further, how would Bach or for that matter Berg sound in an atmosphere that was slightly altered? More nitrogen, less oxygen and vv?

Then again, I recall that aboard Voyager was a recording of some music from us humanoids. Should aliens find that and understand how to play it, how will it sound to them, assuming that they can indeed hear? Did the space engineers include instructions for air-mixture proportions?

Alll of these questions while algae blooms around the inlet pipe for my city!