What does kristian bush do in the band sugarland?

Kristian Bush is the lead vocalist, guitarist, and songwriter for the country music duo Sugarland. He founded Sugarland with Jennifer Nettles in 2002 after their previous band, the Southbound, disbanded. Bush is also the co-writer of many of the band's hits, including "Settlin'", "Stuck Like Glue", "All I Want to Do", and "Tonight."