Although samba and bossa nova are considered Brazil's national musics we must not ignore the baião rhythm which is used by forro, côco and embolada. The baião is very much a rural music and for a long time was eschewed by the urban upper classes.
This is the great Luiz Gonzaga, firstly with The Cawhand and then with a song called Wailing Accordion.
This one is pretty special. It's a fully working melodeon which has been restored and tuned. It measure 6" high, 3.5" deep and 8" across when the bellows are closed (15cm x 9cm x 20cm) and was said to play like a dream. It had a buy it now price of £250 although I don't think it sold.