Leona Louise Lewis (born 3 April 1985) is an English singer-songwriter and winner of the third series of United Kingdom television talent show The X Factor. Her UK debut single; -A Moment Like This-; broke a world record after it was downloaded over 50;000 times within 30 minutes.Her second single; -Bleeding Love-; was the biggest-selling single of 2007 in the UK; topped over thirty national singles charts and became a number one single on the first week in France and number one in the United States. "Happy" is a song performed by British pop singer Leona Lewis. It was written by Lewis, Ryan Tedder and Evan "Kidd" Bogart and produced by Tedder for Lewis's second album Echo. It was released on 15 September 2009 serving as the album's worldwide lead single. "Happy", a ballad, was written by Ryan Tedder, Leona Lewis and Evan Bogart and produced by Tedder for Lewis's second album Echo. The song, which is four minutes and two seconds in length, was recorded immediately after it was written. Lewis commented, "The vocal was totally spontaneous. I sang it as soon as we finished writing.Leona Louise Lewis (born 3 April 1985) is an English singer-songwriter and.