The musicological study of the Bojana Agung song examines the inculturation song as a faith reflection that lives and develops in the context of Javanese culture. Combining textual research methods and literature studies, this paper describes (1) How can the Javanese inculturation style in the Bojana Agung be a contextual reflection of the faith experience in the Eucharist?; and (2) How can the encounter between the Gospel and Javanese culture in the Bojana Agung's inculturation process encourage the faith growth in being more participative and transformative? Using the music score from Kidung Adi number 242 as the primary data, this research shows that Bojana Agung uses a pelog nem pentatonic scale with a binary song form. Part A's unison melody depicts the Last Supper contemplation; meanwhile, part B's two and four voices composition creates a livelier Church's response to this glorious passage. Diversity, togetherness, cooperation, humility, and wisdom are Javanese's noble values that are inculturated in this song. The encounter between the Gospel and the local is the essence of the inculturation process. Through it, the Church is more active, creative, and inclusive in responding to the fullness of Christ's incarnation.