For 50 years, Paul Simon has been a leader in American pop music. He's written dozens of classic songs like "The Sound of Silence" and "50 Ways to Leave Your Lover" and "You Can Call Me Al."

Famed jazz instrumentalist and composer and CBS News cultural correspondent Wynton Marsalis recently sat down with the 70-year-old Simon - musician-to-musician - to talk about how Simon became one of the most important artists of his generation.

Simon opened up to Marsalis about the roots of his inspiration and how he expresses himself through music now.