How useful is a production of culture perspective in understanding the birth of rock and roll?

Peterson’s production of culture perspective is useful in understanding the birth of Rock n Roll. It addresses 6 points which developed at the same point in time which consequently influenced its emergence. This approach is more realistic than the idea that the genre was born from its artists or that it was a result of the post war baby boom.
This approach tackles many of the factors which contributed to Rock n Roll’s emergence, however it’s hard to ignore that it doesn't account for a major factor which contributed to its birth, the music itself. It doesn't discuss the production or content of the music but rather its distribution. It doesn't pinpoint why it was this particular genre which emerged in 1955. Technologically it doesn't discuss the development of the microphone, amplification, recording and the electric guitar, all major aspects of Rock n Rolls unique sound. Lastly it doesn't address the connection and engagement between the genre and teenagers, the audience which had most control over its popularity. It is therefore plausible to suggest that if these factors were combined with the 6 points in the production of culture perspective that perhaps we would have a much more concise picture of why it actually was 1955.