Bintari Purwasari, Riki, and Tomy Sugito. “A Rock Music As Extracurricular Music Material To Improve Musical Abilities At Al-Azhar 13 Smp Surabaya (Case Study Of Altera Band) ”. Solah 12, no. 1 (January 28, 2026). Accessed February 18, 2026. https://ejournal.unesa.ac.id/index.php/solah/article/view/75628.