Samba gets new rhythms 100 years after first recording

Monday nights feel like Saturdays in Rio's Little Africa neighborhood when the sun sets and the samba starts to play.

Surrounded by a mostly young crowd, seven musicians sit around a table with the small four-string guitar called a cavaquinho, the cuica drum and a tambourine.

The instruments and the relaxed format, known as a "roda de samba," has changed little since its infancy in the late 19th century, when Afro-Brazilians first developed the style in this same neighborhood, officially known as Saude.