1974 Hit 'TU' is the title of a song by the Spanish singer Rocio Durable. The song was released in 1974 and became an instant hit in Spain and Latin America. It was written by Juan Carlos Callejo and produced by Manolo Gonzalez. The lyrics are about a woman who is longing for her lover to return to her. The song was so popular that it was covered by many other artists including Julio Iglesias and Miguel Bose. ERES is the Spanish word for 'you are'.'