Nazan Öncel is a Turkish singer-songwriter and composer known for her contributions to Turkish pop and rock music. Emerging in the late 1970s and gaining broader recognition from the 1980s onward, she has been active for several decades in Turkey's popular music scene. Her work blends pop sensibilities with rock, folk and singer-songwriter traditions, often featuring candid, emotionally direct lyrics and melodic arrangements that incorporate both acoustic and electric instrumentation. As a performer and songwriter, she is noted for her distinct vocal delivery and for writing material for herself and other Turkish artists, contributing significantly to contemporary Turkish popular music.