City and Colour
Canadian folk artist Dallas Green (Get it? A city and a color... what quick wit.) records under the name City and Colour and his music is undoubtedly in my top favorites. His first album called Sometimes was released in 2005 but re-released in 2009, and his second album called Bring Me Your Love was released in 2008.
His sound is folk/acoustic, and very melodic and catchy. Songs like "The Girl" and "Save Your Scissors" will be stuck in your head all day, while songs like "Comin' Home" and "Constant Knot" are like a sweet serenade.
Please check him out. You won't be disappointed.