Koesbini (Perfected Spelling: Kusbini; 1 January 1910 – 28 February 1991) was an Indonesian composer and musician. Born the son of a forest ranger in Mojokerto, he became interested in music at a young age and became a member of a Surabaya-based orchestra. By the 1930s he was composing his own kroncong songs and playing the violin and singing on radio broadcasts, gaining enough popularity to be contracted to Majestic Films in 1941 and score two films. During the Japanese occupation of the Dutch East Indies, he composed the song "Bagimu Negeri", later considered his most significant work. During the Indonesian National Revolution, Koesbini supported the republican government, and after the revolution concluded he operated his own music school while working for the Ministry of Teaching, Educ