Why are there so many odes to rock n' roll?

“Rock and Roll All Nite.” “I Wanna Rock.” “I Love Rock n’ Roll.” “Rock Around the Clock.” “American Pie,” if I’m reading deeply enough into the lyrics. Most likely others.

I haven’t encountered this phenomenon in any of the other genres that I listen to, except country/western, and that to a lesser degree. Certainly not classical music.