The Indonesian pop recording "Kala Sang Surya Tenggelam" features a prominent keyboard melody, which carries the primary musical theme. The arrangement also includes an acoustic guitar, adding a layer of texture and rhythmic drive. A male vocalist delivers the lyrics in a clear, expressive style, supported by a female chorus that provides harmonies and fills out the sound. The song's structure is built around a consistent, mid-tempo drum beat, providing a steady foundation for the melodic and vocal elements.