He's withing reach of a headlining show in Las Vegas and a one million dollar grand prize.  Maceo, Kentucky native Marty Brown has advanced to the semifinals of America's Got Talent.  Marty has been enjoying a huge career resurgence thanks to the hit NBC talent show and his fan base is growing larger than ever.  A couple of weeks ago he gained even more fans when he took the field at a Bowling Green Hot Rods game and sang the National Anthem.  WATCH!