Koestono "Tonny" Koeswoyo (19 January 1936 – 27 March 1987) was an Indonesian rock musician and leader of the music group Koes Plus. Koeswoyo played piano, guitar and keyboard. References 1936 births 1987 deaths Deaths from colorectal cancer English-language singers from Indonesia 20th-century Indonesian male singers Indonesian rock singers Javanese people People from Tuban