Ayu Fatimah, Bellaresa Hari Kristina, Defi Firawati, Deswara Bayu Pambagyo, Devita Septiana Anggraeni, Dhian Prasetyo Adjie, Zidni Elma Nafia, and Syahrul Syah Sinaga. 2026. “Group-Based Differentiated Instruction Improves Guitar Chord Skills Among SMAN 3 Semarang Students”. International Journal of Education, Vocational and Social Science 5 (04), 3029-46. https://doi.org/10.63922/ijevss.v5i04.6813.