By the year 1870, jam sessions carried out by amateur musicians in Rio de Janeiro evolved into ways of playing and composing a different kind of music. Strongly influenced by waltzes, polkas, urban folk songs and ballroom dances, probably from Hungary, combined with other genres brought into the country at the time, two musical variants were born: a more harmonic kind of beat that was named choro, and a more rhythmic sound out of African inspiration that was called samba.
