In addition to playing the soap opera, Chelsea who are Protestant is busy singing with BBB (Bukan Bintang Biasa, Korean: 보통하지 별, Botong Hachi Byul), a Korean wave-type group singer made up from younger soap opera stars such as: Laudya Cynthia Bella, Raffi Ahmad, Dimas Beck dan Ayushita under the guidance of singer and songwriter Melly Goeslaw.
He also began to explore the world of singing with vocal group by Melly Goeslaw Bukan Bintang Biasa together with Raffi Ahmad, Chelsea Olivia Wijaya, Dimas Beck, and Ayushita.