Spain's entry for the Eurovision Song Contest 2006 was selected internally by national broadcaster TVE. After much speculation from Spanish Media, it was revealed officially that Las Ketchup would represent Spain with the song "Un Blodymary", also the name of their next album. "Un blodymary" has a calm rhythm with Andalusian Flamenco elements. The song is written and composed by Manuel Ruiz Gómez (Queco), the man who also produced the 2005 Spanish entry "Brujería", performed by Son de Sol.

Las Ketchup is a Spanish group consisting of four sisters called Pilar, Dolores, Lucía and Rocío Muñoz. Hailing from Córdoba, Las Ketchup are the four daughters of El Tomate, the Flamenco guitarist. Their first album was titled Las Hijas del Tomate (Daughters of the Tomato), which contained their international hit, "The Ketchup Song" ("Aserejé").

Spain automatically qualified for the grand final, on 20 May 2006; as part of the "Big Four". During the placement draw, it was determined that Spain would perform 6th. On 20 May, Spain placed 21st with 18 points.

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