Severino "Sivuca" Dias de Oliveira (26 March 1930, Itabaiana, Paraíba, Brazil — 14 December 2006, João Pessoa, Paraíba, Brazil) was a Brazilian accordionist and guitarist. He is best known internationally for his work with Scandinavian jazz musicians in the 1980s. His most famous songs are the Brazilian popular classic "João e Maria" with lyrics by Chico Buarque and the accordion standard "Feira de Mangaio". He is also famous for his use of makeshift instruments playing alongside conventional ones and for his versatility