Oh then you must mean The Bossa Nova
Bossa Nova - A suave, romantic style which started in the 1950s, replacing samba as the national music. Typically, bossa nova (which means "new way" in Portuguese) is very mellow and laid-back, and very, very cool. In the early 1960s, bossa nova rhythms became popular with jazz and pop musicians in the U.S. and Europe.