Has that "unknown artist" Sir Paul McCartney been riding on Kanye West and Rihanna's coat tails by performing that hit song "Four Five Seconds" live?       How many people today even know just what is a Rutle?    We ask the question where the next generation of Beatles fans are coming from, and how the message of "All You Need is Love" stands up in this more cynical era, and find that young people are still listening to the music and becoming fans of the Fab Four.