David Nizam "Brownsound" Baksh (born July 26, 1980) is a Canadian musician, singer and producer best known as the lead guitarist of punk rock band Sum 41. Baksh left the band for nine years, but returned in 2015. After leaving Sum 41, he became a singer and guitarist in his own heavy metal/reggae project Brown Brigade. He also plays guitar for Organ Thieves, with two of his fellow Brown Brigade members and the Canadian death punk four-piece Black Cat Attack.