Jacob Vaet (also known as Jacobus Vaet) was a Flemish composer of the Renaissance period, active in the late 16th century. Born around 1510, he became known for his contributions to sacred music, specifically motets and masses. Vaet's works are characterized by their intricate polyphony and expressive melodies, typical of the Franco-Flemish school of composition. Notable works include his "Missa super 'Dixit Maria'" and numerous motets like "Super flumina Babylonis." His compositions often reflect the stylistic innovations of his contemporaries, incorporating both traditional elements and emerging practices of the time. Vaet's impact on music lies in his role in the development of polyphonic choral music, influencing both his immediate circle and later generations of composers. His music was performed in various European courts and churches, contributing to the dissemination of Renaissance musical styles. While not as widely recognized as some of his peers, Vaet's contributions helped shape the landscape of sacred music during a pivotal period in Western music history. His works continue to be of interest to musicologists and performers dedicated to Renaissance music.