First recorded by Jorge Ben (1963).
Hit version by Sergio Mendes & Brasil ’66 (US#47/MOR #4 1966).
From the wiki: “‘Mas, Que Nada!’ was written and originally performed by Jorge Ben (‘Do You Think I’m Sexy?‘) on his 1963 debut album. The song would later become a signature song – and a US hit – of Sérgio Mendes & Brasil ’66.
“‘Mas, Que Nada!’ has been voted by the Brazilian edition of Rolling Stone magazine as the 5th greatest Brazilian song of all time, and has been inducted into the Latin Grammy Hall of Fame.