Found this on the web (http://aliso.pntic.mec.es/~jheras1/tarreng.htm0:
Tarrega also played in London, but there he liked neither the language, nor the weather, nor the fog. There is a story about his stay there. After a concert, some people saw that the maestro was a little sad. What is the matter, maestro? Do you miss home? Your family, perhaps? They advised him to capture that moment's sadness in his music. Then he conceived the theme of this work, called Lágrima.
