The viola beiroa is a stringed musical instrument from Castelo Branco, Eastern Portugal. It has 12 strings in 7 courses. The strings are made of steel. It is tuned D3, D3, A3 A2, D3 D2, G3 G2, B3 B3,
Portuguese Viola Beiroa at the Casa Museo Del Timple, Lanzarote, Spain.
The viola amarantina is a stringed musical instrument from Amarante, Northern Portugal. It is also named viola de dois corações because of the two heart-shaped frontal openings. It has 10 strings in 5