Listen to Couro de Boi online. Couro de Boi is a Portuguese language song and is sung by Nestor da Viola. Couro de Boi, from the album 20 Sucessos: O Violeiro Mais Sertanejo do Brasil, Vol. 3, was released in the year 2002. The duration of the song is 2:50. Download Portuguese songs online from JioSaavn.