 The song was released as the lead mainstream single of the album in July 2006.After signing a contract deal with Regal Recordings and gaining popularity on the social network website Myspace with demo songs, Allen released a limited edition of "LDN" to promote her work and afterwards announced the release of "Smile".The song incorporates rocksteady music, as the lyrics tackle her dealing with the betrayal of her boyfriend, while enjoying his misery.