Alfredo da Rocha Vianna Filho (1897-1973), better known as Pixinguinha, was a "choro" composer, arranger, flutist and saxophonist born in Rio de Janeiro. Through the legacy of the pioneering "choro" composers of the 19th century and of the Afro-Brazilian tradition, Pixinguinha produced the most important "choro" works of all time. Edifying the "choro" as a musical genre, he conferred on it personality and identity. Wikipedia
The definitive Wikipedia entry for Pixinguinha. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Pixinguinha