Kristian Merrill Bush (born March 14, 1970, in Knoxville, Tennessee) is an American folk rock and country musician. From 1990 to 2001, Kristian was a member of the folk rock duo Billy Pilgrim along with Andrew Hyra. After leaving Billy Pilgrim, Bush joined Kristen Hall in the group Sugarland and they approached Jennifer Nettles about teaming up with them and being their lead singer. Bush and his wife, Jill, have two children, son Tucker and daughter Camille. Bush's brother Brandon is a former member of the rock group Train, and also tours with Sugarland. The group Sugarland was the next act scheduled to appear onstage at the Indiana State Fair stage collapse of August 13, 2011.