in the usa, he mastered various bass playing techniques, being one of the pioneers of fretless and 6-string bass in brazil when he came back on 1981, the same year in which he released the first bassist solo album in the country, titled "nico assumpção". in 1982 he moved to rio de janeiro, where he lived for the rest of his life, and turned into one of the most popular bassists of the country among musicians and artists for recording and shows, having played and/or recorded with milton nascimento, caetano veloso, gilberto gil, joão bosco, maria bethânia, edu lobo, césar camargo mariano, toninho horta, luiz avellar, wauke wakabaiashi, marco pereira, ricardo silveira, gal costa, hélio delmiro, maria bethânia, márcio montarroyos, raphael rabello, léo gandelman and victor biglione, among others.