Twelve acts participated in the Spanish national final "Eurovisión 2005: Elige nuestra canción", hosted from Madrid by Carlos Lozano, Patricia Pérez and Ainhoa Arbizu, and broadcast by TVE. The final included one semi-final, held on 4 March 2005, and a final held the next day on 5 March 2005. The list of participants included the controversial trio Las Supremas de Móstoles, who would rank second.
Spain automatically qualified for the grand final, on 21 May 2005; as part of the "Big Four". During the placement draw, it was determined that Spain would perform 10th. On 21 May, Spain placed 21st with 28 points.