Walter Smetak has been played on NTS in shows including Dactylian & Palo Santo Discos, featured first on 14 September 2020. Songs played include Oficio, Convite and Uibitus E Beija-Flores Etc. “Poluiçãoquebratória”.

Walter Smetak was born in 1913 in Switzerland and died in 1984 in Brazil. He was a cellist, composer, inventor, playing and conducting music by instruments he invented. Smetak was deeply involved in the Brazilian music scene collaborating with Gilberto Gil, Tom Zé, Uakti and others.