This paper addresses the changing soundscape of Indonesia at the intersection of Islam wasatiyyahand Islam radikal. Renown for resonant traditions of Arabic language performance, ranging from Quranic recitation to various styles of devotional song (shollawat), Islamic musical arts (seni musik Islam) flourish in Indonesia due to the proactive adaptation of text and melody from the Arab mashriq, the Gulf, and the Indian Ocean world. Complementing a performative discourse born on the Indian Ocean trade winds are the myriad local styles of performative Islam which have always shaped cultural practice. Based on new fieldwork, this presentation investigates the ways in which musical styles suggest particular aesthetic and political positions with regard to religious culture. Beginning with the political culture wars sparked by the use of local, Javanese melodies for Quranic recitation at the Presidential Palace in 2015, I exemplify the religious performance (from Quranic recitation to song to music and dance) of a range of communities at the intersection of Islam radikaland Islam wasatiyyahand theorize the ways in which melodic and musical style signify subjectivity and community identities. Swept up in the Tsunami of racist nativism both Indonesian and Arab performance aesthetics have been on the chopping block as the country struggles to contain the vociferous presence of religious hardliners (Islam keras) and modernist Muslims whose voices are tuned, ironically, to a globalized Western musical aesthetic.