Musical listening is nondual. This is explained through the phenomenology of attunement, Stimmung.
When we listen to music, we do not under normal circumstances listen to it 'as an object'. Music is not heard as either 'out there' nor as something solely 'in the mind' but rather through an effortless, spontaneous nondual, ego-less process of tuning-with the music.
Music listening thus gives us a meaningful referent and valuable experience to draw upon when practicing to recognize the nature of mind, which is non-dual awareness, empty luminosity. In this regard, all music is thus already soteriologically meaningful to some degree, and a phenomenology of attunement was the basis for Kūkai’s esoteric soteriology; the attunement to empty space (dharmakāya) is the recognition of the nature of reality.
Precisely because a technology is a reusable, low-resistance path, when a piece of technology catches on widely, it tends to exponentially scale the type of behavior that it makes easier. When TVs exploded in popularity in America, it exponentially scaled the behavior of zoning out in front of a screen, hypnotized by constant visual stimulation.