<![CDATA[This study aims to implement and analyze the effectiveness of the Acapella Mixcord application in improving the ability to sing in multiple vocal parts among ninth-grade students of SMPN 10 Surabaya in the 2026/2027 academic year. The study employed a mixed-methods approach with an exploratory sequential design. The participants consisted of music teachers and 72 ninth-grade students. Data were collected through interviews, questionnaires, and documentation. Qualitative data were analyzed using the Miles and Huberman model, while quantitative data were analyzed using descriptive statistics. The results indicated that the Acapella Mixcord application was successfully implemented in music learning through digital recording and multi-track vocal integration activities. The application enhanced students’ learning motivation, creativity, collaboration, self-confidence, and multi-part singing skills. Questionnaire analysis revealed an overall mean score of 4.45, categorized as very high. Therefore, Acapella Mixcord proved to be an effective technology-based learning medium for music education, supporting the characteristics of digital-era learners while creating a more engaging, interactive, and innovative learning environment]]>
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