[Watch] Sunmi, BE'O Release Collab 'Lights Out' By Staff Reporter Mar 23, 2023 slide 2 of 6 Photo: Sunmi Instagram Photo: News1 Photo: BE'O Instagram Photo: BE'O Instagram Photo: Sunmi Instagram Photo: Sunmi Instagram Photo: Sunmi Instagram Photo: BE'O Instagram Photo: BE'O Instagram Singer Sunmi and rapper BE'O teamed up for a new single "Lights Out" on March 22.