On Searching For The First Rock and Roll Song, listeners will hear music

• from before rock and roll was domesticated into a commercial music industry.
• when country and western sounded like swing,
• when pop music sounded like rockabilly,
• when rockabilly sounded like rhythm and blues,
• when doo wop sounded like girl groups,
•  

and all that music sounded like what we now call "rock and roll."

Not a hits, oldies, or “history of” radio show. it's all the songs that influenced our now-legendary musicians who are regularly featured in all those hits, oldies, and “history of” radio shows.