Mark Wilkerson

Mark Wilkerson is an American musician, who was the lead singer and guitarist for rock band Course of Nature, previously known as COG.Wilkerson co-wrote the song "It's Not Over" which was released as a single and as the opening track on the eponymous album by Daughtry. On December 6, 2007, the song earned him and the other co-writers a nomination for Best Rock Song for the 50th Annual Grammy Awards.On May 3, 2007, Wilkerson gave a concert to help the relief efforts of Enterprise High School in Alabama, two months after a violent storm destroyed the school and killed eight students.