Sepultura, one of Brazil's leading heavy metal bands, is adding its voice to the movement to safeguard the future of pernambuco (pau-brasil) wood. A special benefit concert this Saturday 16 April as part of São Paulo's Virada Cultural festival will see the band collaborating with the Orquestra Experimental de Repertório in orchestral arrangements of Sepultura songs. The event has been organised by the producers of The Music Tree, a 2009 Brazilian documentary about pernambuco and the fight to protect it from extinction. The Institute Verde Brasil will plant a thousand pau-brasil trees on behalf of the concert.