The Qur’anic recitation with melodious vocals and melodies has a significant role in implementing congregational prayers in a mosque. Musical recitation by a competent Imam can increase the worshipers’ comfort during the prayers. However, little is known to the general public about what is behind the beautiful recited voice. Some Muslims believe that the recitation of the Qur’an in prayer could not be included as music, even though some musicological aspects support its aesthetics. Although the artistic significance of the Qur’an’s recitation is not uncommon among Muslims and even contested openly, the musicological aspects of its recitation in congregational prayer rarely be discussed. The problem discussed in this study is what underlies the recitation of a trained Imam so that the worshippers sincerely feel comfort in following the congregational. This study aims to identify the scale modes within recited Qur’anic verses by the Imam during the congregational prayer at the Jogokariyan Mosque in Yogyakarta. This research uses qualitative methods with a participating observation as its approach. The analysis unit of this study is the Al-Fatiha Chapter recitation by one of the best Imams of the mosque while leading the congregational prayers during the month of Ramadhan this year. Data disclosure uses musicological analysis involving field data recording transcription and theoretical methods. The research stage includes the field research process, transcription from the Qur’anic reading by the subject, theoretical analysis, and formulating findings. This study has resulted in an array of knowledge concerning the Imams and Muadzin management system and the characteristics of the Qur’anic recitation performed by the research subject. From a Western musicological perspective, the music transcription showed varieties of Qur’anic recitation tunes produced by the Imam within the framework of major and minor scale modes. The Imam clarified that the recitation implemented Islamic music theory known as maqam types. In conclusion, the Bayati maqam applied by the Imam resembles the Phrygian Mode of Medieval mode. Meanwhile, the Hijaz maqam resembles the Phrygian Dominant scale. Implication: While for some circles of Islamic society, music is controversial in reality, many valued aspects of Islamic religious activities can contribute to the development of musicological studies.