I like works that combine concrete recorded sounds (like a car backfiring, or the scraping of shoes against a gravel path) with melodic, harmonic, traditionally “musical” sounds. The first is grounded in reality, while the second is grounded in… something else.
They seem to access different kinds of meaning. The everyday sounds inevitably trace their meaning back to concrete places, events, activities, people; the musical sounds, on the other hand, make their meaning out of shared cultural patterns of musical expression.
These two types of meaning are “linearly independent”, which is to say that they act in different dimensions from one another. This way, together, they can make something multi-dimensional.