Korean pop groups EXID, JBJ and B1A4 got the crowd screaming during their performances at the Singapore Indoor Stadium on Wednesday night (21 Feb). They were part of Stargram’s 2018 Launch K-Pop show, together with violinist Eugene Park, classical singer Kwak Dong-hyun and dance group Optical Crew. Stargram coin is a cryptocurrency that can be used to purchase selected content, such as certain celebrity-related fan items. Fans can purchase tickets, special albums, items from affiliated shops and enjoy concert and fan-meeting privileges using these coins. For more photos, check out this slideshow: K-pop groups EXID, JBJ and B1A4 rock crowd at Singapore Indoor Stadium . Follow Yahoo Lifestyle Singapore on Facebook .