They recorded their self-titled first album "Ha*Ash" with the Mexican producer Áureo Baqueiro in 2003. In April, they released their first single, "Odio Amarte". The second single was "Estés Donde Estés" which was released in July 2003. In February 2004, a third single was released: the ballad "Te Quedaste". This was followed by their second album "Mundos Opuestos" again with Áureo Baqueiro. "Amor a Medias" was the first single and reached number four on the Mexican Chart in April 2006. The song was chosen to promote Sony's products. "Me Entrego a Ti" was the second single which was written by Colombian artist Soraya and had the same success.