Adopting the united states music design, Bob Nelson experienced strikes as singer/composer with songs like “O Boi Barnabé” (with Afonso Simão), “Eu Tiro o Leite” (with Sebastião Lima), and “Te Agüenta, Guyé” (with Almeida Rego). His version for “O Susana” was also released in the U.S. He participated in movies in the ’40s, such as for example Segura Esta Mulher and Este Mundo é Um Pandeiro. Nelson’s early shows as a vocalist were in the Rádio Educadora (Campinas SP) in the ’30s. He was a support vocalist for Carmen Miranda in 1939, when she performed in his hometown. Within the next 12 months, affected by Carmen’s associated group Bando da Lua, he participated in the vocal/instrumental Grupo Cacique group, which also experienced Paulinho Nogueira as an associate. In the ’40s, Nelson used the cowboy clothing, carrying out for General McCarthy through the World Battle II. He also proved helpful at Rádio Nacional until 1976.