During the Carnival in Rio de Janeiro Jos Bispo Clementino dos Santos is the official singer of the samba school Mangueira.
Jos Bispo Clementino dos Santos (May 12, 1913  June 14, 2008) was a Brazilian samba singer known as Jamelo (] ). 
 He began in music as a tamborim player, but later became known as the official singer at samba school Mangueira's carnaval parades, performing in every Carnaval from 1949 to 2006. 
The Carnival in Rio de Janeiro (Portuguese: Carnaval) is a festival held every year before Lent and considered the biggest carnival in the world with 2 million people per day on the streets. 
