Social networks and the chattering media provide a constant background hum of possible risks, opportunities, competitors, and irrelevancies. (inc.com)
I accept that noise at a level that could cause physical harm would constitute «pollution» but given that wind turbine noise is more of a small background hum at distance of about 400m, that falls far short of a reasonable threshhold for measurable harm. (realclimate.org)
White Noise - While not specifically music, a white noise machine can help babies fall asleep and stay asleep longer, since the normal bumps in the night are drowned out by a constant background hum. (lullabyearth.com)