Justin Bieber is a musician.
Justin Drew Bieber ( [ ˈbiːbər ] born March 1 , 1994 ) is a Canadian singer and songwriter . He released his second studio album , Under the Mistletoe , in November 2011 , when it debuted at number one on the Billboard 200 . My World is the debut extended play ( EP ) by Canadian recording artist Justin Bieber . Under the Mistletoe is the first Christmas album and second studio album by Canadian recording artist Justin Bieber .