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.
Abdullah Ahmad Badawi | Ahmad Shah Durrani | Ahmad Shah Massoud | Ahmad | Raja Muhammad Fayyaz Ahmad | Fandi Ahmad | Muhammad Ahmad | Salman Ahmad | Raffi Lavie | Mirza Tahir Ahmad | Mirza Ghulam Ahmad | Khwaja Ahmad Abbas | Raffi Ahmad | Omar Ahmad Omar al-Hubishi | Mirza Basheer-ud-Din Mahmood Ahmad | Eqbal Ahmad | Ahmad Vahidi | Ahmad Tejan Kabbah | Ahmad Chadway | Ahmad Bradshaw | Nik Nazmi Nik Ahmad | Faiz Ahmad Faiz | Ahmad Tavakkoli | Ahmad Shahrul Azhar Sofian | Ahmad Shah of Pahang | Ahmad Shah I Wali | Ahmad Shabery Cheek | Ahmad Salim | Ahmad al-Mansur | Zakariyya Ahmad |
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.