Merle Haggard put on an excellent show Tuesday night at The Centre, in what could be the last time we get to see him perform in the Tri-State. As he went through his endless number of hits, I got to thinking, 'What's next for country music?' I don't have a problem with the evolution of country. I like the new stuff. I like the old stuff. What I don't see is iconic figures like Merle making a career like him. So, who's next?