Calle 13 is a band of urban music of Puerto Rico, headed by René Pérez Joglar, (Residente), and his brother Eduardo Cabra Martínez (Visitante). His sister Ileana Cabra Joglar (PG-13), is the female voice of the group.

Today they have 4 albums: Calle 13 (2005), Residente o Visitante (2007), Los de atrás vienen conmigo (2008) y Entren los que quieran (2010). In 2009 Resident and Visiting presented his first documentary, Sin Mapa, which was televised by MTV. It tells the journey of the group who were in search of the essence of the great Latin American continent.
http://www.youtube.com/watch?v=X7Z1Z1G-XIU
I like Calle 13 for their lyrics and unique style of music. Each song poseeun shocking social content, using irony and humor, as well direct. They sing to life, to the foolish, the efforts of the people, the desires, to consciousness, to everything.
It's been one of the best bands I've seen live, great staging and an atmosphere that everyone enjoyed, it is best to have been the first one meter off the stage!
I like all the songs, and it's hard to choose just one, but there is a special which speaks of love and a message behind for justice to animals, Muerte en Hawaii.