And there may be something in the fact that juke boxes allowed people to play music cheaply even if they didn't have a gramaphone at home, or if what was played at home was their parents' choice not the devil's music!
I've got piano rolls of Presley songs as well as Waller, Tatum,Eubie and Willie the Lion. Would Presley rolls have been cut if no-one knew his recordings?
RtS