R2D2: You're right. If you want to retain any popularity you have to try to change with the times. I don't think that was as hard for Elvis, because he was a crooner as well as a rocker. I just avoid the newer recordings of Vincent. And as this is a folk community and you and I may be the only ones on this thread, I had an extended play 45 rpm with him doing a rocking version of Frankie and Johnny.
Jerry