High Quality Content by WIKIPEDIA articles! "Happy" is a song performed by British singer Leona Lewis for her second studio album Echo (2009). It was written by Lewis, Ryan Tedder, Evan Bogart, and produced by Tedder, and it was premiered in the United Kingdom radio on 6 September 2009, and officially released on 15 September 2009, by digital download in the United States, serving as the album`s lead single. Lyrically, it talks about a protagonist, that wants to be happy and seize the day.