Jan Evangelista Zelinka (1710-1780) was a Czech composer and organist, prominent in the Baroque music era. His works predominantly belong to the sacred music genre, with a focus on choral compositions and organ music. Zelinka served as an organist in various churches, notably in Prague, where he contributed significantly to the musical life of the city. Among his notable works are his "Missa Solemnis," "Missa Brevis," and various motets, which showcase his skill in counterpoint and rich harmonic language characteristic of the Baroque style. His compositions often reflect the influence of his contemporaries, including composers like Johann Sebastian Bach and Antonín Vranický. Zelinka's impact on music is primarily seen in his contributions to the development of Czech liturgical music and the Baroque style in Central Europe. While not as widely recognized as some of his contemporaries, his music remains significant for its complexity and emotional depth, serving as an important link in the evolution of sacred music in the region. His works continue to be performed in liturgical settings and by ensembles dedicated to early music.