Came across this interesting site which has sort of headlines from the beginning of what we want to refer to as rock and roll and before. Check it out.
https://www.msn.com/en-us/entertainment/news/it-s-been-70-years-since-the-first-rock-n-roll-song-came-out-see-what-it-was-plus-more-iconic-moments-in-music-history/ss-AA1sz0XR?ocid=msedgntp&pc=HCTS&cvid=08a940da350e40bc8f835bfdf9a4ff38&ei=13