Brazilian music is richly diverse. A common misconception is that Samba is the only original Brazilian form of music. It consists of several different rhythms - which came from a mixture of world wide music.
From Africa, came the strong beats and Europe also had enormous influence.
There are innumerable varieties of music, but the main ones are:
Samba
Pagode
Frevo
Forró
Axé
Musica Popular Brasileira (MPB)
Sertaneja
But there is also Brazilian rock, rap, and soul.