Most of Mozart's religious works were composed during the Salzburg period. Due to Mozart's rich life experiences and his strong desire for change, he composed a considerable amount of works with diversified styles. This thesis is focused on studying Litany and its equivalent importance to Mass from several dimensions. The author's main purpose is to explore how Mozart's musical style of《Litaniae de Venerabili altaris sacramento KV 243》is influenced by Salzburg's traditions, the Napoli's and Manhan's school.

This thesis includes four parts: the introduction, the methodology, and the scope of the research; the introduction to Mozart's life and to how the Salzburg's traditions influenced his composition, and the religious meaning of Litany and its application to music; a framework for analysis the form, tonality, harmony of the work and to provide appropriate interpretations of the work.