> there are in Jazz, Blues and Folk?
Well, "Louie, Louie" has been covered about a zillion times. Rhino has a compilation solely of covers of it.
And
October 9, 1965: “Yesterday,” by the Beatles, hits #1 for the first of four weeks. It is the most covered song in pop history, with more than recorded 2,500 versions.
http://www.rockhall.com/inductee/the-beatles