Why Intermittent Music

From Intermittent Wiki

And now as if the cleaning and the scrubbing and the scything and the mowing had drowned it there rose the half-heard melody, the intermittent music which the ear half catches but lets fall; a bark, a bleat; irregular, intermittent, yet somehow related; the hum of an insect, the tremor of cut grass, dissevered yet somehow belonging; the jar of a dor-beetle, the squeak of a wheel, loud, low, but mysteriously related; which the ear strains to bring together and is always on the verge of harmonising, but they are never quite heard, never fully harmonised, and at last, in the evening, one after another the sounds die out, and the harmony falters, and silence falls. To the Lighthouse By Virginia Woolf

Poorly soldered connections or broken internal connections can cause intermittent music. Troubleshooting and Repairing Consumer Electronics By Homer L. Davidson

Ambient is generally used to mean sounds that typify a given area (e.g., the sounds of birds, insects, wind, weak intermittent music, and people's voices). The Effects of Noise on Man By Karl D. Kryter