In her native country (Peru), Betty began her career as a dancer, but she had to halt her career due to an injury. She continued pursuing a career in show business, more specifically, she was a host for a television program that brought her great popularity in her native Peru.
In 1972, she represented Peru in the first Festival OTI de la Canción, held in the Auditorio del Palacio de Congresos y Exposiciones in Madrid (Spain) on November 25, with the song "Recuerdos de un adiós".
In 1979, she represented Spain in the 24th annual Eurovision competition held in Jerusalem (Israel) on March 31 with the song "Su canción". She ended up in 2nd place with 116 points, behind Israel's Gali Atari and Milk and Honey with the song "Hallelujah". She also participated in the World Popular Festival in Tokyo and the Music Olympics in Paris. In 1980 she submitted another song, "Don José" to the Spanish selection committee for Eurovision but it did not make it to the finals in The Hague.
Betty had 4 anonymous children who sang 157 las in the song, a Eurovision record. One of them, Joaquín Missiego (known by his mononym "Missiego"), became a successful singer.
- Simon Barclay (2010). Eurovision Song Contest - The Complete & Independent Guide 2010. Simon Barclay. p. 176. ISBN 978-1-4457-8415-1. Retrieved 13 February 2011.
with "Bailemos un vals"
|Spain in the Eurovision Song Contest
with "Quédate esta noche"
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