Widjajantie, Kusrina, and Agustinus Nugroho. “The Interest Of Classic Piano Student In Semarang Music Course”. Jurnal Seni Musik 10, no. 1 (June 30, 2021): 81-85. Accessed July 23, 2024. http://journal.unnes.ac.id/sju/jsm/article/view/46879.