Their second album, "Mundos Opuestos" was also produced by Áureo Baqueiro. It was published under the Sony BMG label on September 27, 2005. The album features a cover of the 1935 song "I Want to Be a Cowboy's Sweetheart". The album peaked at No. 8 in the Mexican album charts. In 2005, the album was certified as gold in Mexico. On August 24, 2006 the album was certified as platinum in Mexico. The album eventually was certified platinum and gold in Mexico. "Amor a Medias" was the first single and reached number four on the Mexican Chart in April 2006.