Koes Plus was a legendary Indonesian pop and rock band formed in the 1960s. Originally known as Koes Bersaudara (The Koes Brothers), the group later became Koes Plus in 1969 after a lineup change. They are considered pioneers of modern Indonesian pop and rock music, heavily influenced by Western bands like The Beatles. Their music blended rock, pop, and traditional Indonesian elements, and they released hundreds of songs across multiple genres. Koes Plus became one of the most influential and beloved bands in Indonesian music history.