What's the Root of the Phonograph?

Phono graph means phonetics of graph, logy, writing with sound. It's something that connects not only the way we express ourselves, but how we document and sequence those expressions. So repetition and minimalism are two driving motifs of everything at this point. Hippop techno drummond, bas dub step, two step, basement, bangra a, you name it. And so why in the 20 first century, are we driven towards this minimalist and repetitive music,. whereas most other eras usually had a lot more expressive nuance.