Johann Baptist Thaller (also spelled Thaler) was an Austrian composer and conductor active in the late 18th and early 19th centuries. He is primarily associated with the genre of classical music, particularly within the realms of choral and orchestral compositions. Although not as widely recognized as his contemporaries, Thaller contributed significantly to sacred music, including masses and motets, reflecting the stylistic transitions occurring in the Classical period. One of his notable works includes the "Missa Solemnis," which showcases his ability to blend traditional liturgical elements with the emerging classical style. Thaller's music often emphasized clarity of line and harmonic richness, characteristics that were becoming prominent during his time. While his impact on the broader landscape of classical music may not be as pronounced as major figures like Haydn or Mozart, Thaller's contributions to church music and his role within local musical communities in Austria helped to sustain and develop the choral traditions that were vital to the cultural fabric of the era. His works continue to be performed in certain choral settings, reflecting a lasting, if niche, legacy in the world of classical music.