20 years ago, Chris Stapleton left his small hometown in Kentucky and moved to Nashville to chase his dream of being a songwriter. Five years ago, the dream got bigger when he released his own album, won a pair of Grammy Awards, and established himself as one of the most distinctive voices in all of music. In this week’s “Sunday Sitdown,” Willie Geist gets together virtually with the country star to talk about that journey and his latest album, Starting Over.