A, R Mochamad. “R12 On Music to R47 In Grand Piano With Worship Symbol and Universe Creation in Economic Covid Era”. ITB Graduate School Conference 1, no. 1 (October 13, 2022): 244–252. Accessed October 5, 2025. https://gcs.itb.ac.id/proceeding-igsc/index.php/igsc/article/view/23.