OC Siame (born Siame O’Brien on 25 August 1984) is a Zambian musician known for blending African rhythms with international influences. Born and raised in Zambia, he developed a passion for music at an early age, inspired by local sounds and global genres. He first entered the music scene under the stage name Oc Osilliation, gradually building recognition for his creativity, lyrical expression, and distinctive musical style.

In pursuit of broader opportunities, OC Siame later relocated to the United States of America, where he rebranded himself and began a new chapter in his career. The move expanded his artistic perspective, allowing him to fuse Zambian music elements with Afrobeat, hip-hop, and R&B influences. Despite living abroad, he has remained actively involved in the Zambian music industry, collaborating with artists back home and supporting the growth of local talent.

His music often reflects themes of resilience, ambition, cultural pride, and transformation. As an artist navigating life between two continents, OC Siame represents a generation of African musicians who maintain strong cultural roots while embracing global platforms, helping to promote Zambian music to a wider international audience.