An example of this is the probably most emblematic (anonymous) song "Asa Branca", made famous across all of Brazil in the 1940s by Luiz Gonzaga, sometimes also called the "Hymn of the Sertão" or "Hymn of the North-East". The lyrics are about leaving the rural home in the Sertão because of drought, and about hope to be able to return when the rain will fall again on the dry, barren land of the Sertão. The rain will be announced by the arrival of asa branca, a certain white winged bird, which only flies there if it rains (there is a recent American version played by the group Forro in the Dark featuring David Byrne).