Ercole Porta (c. 1580–1655) was an Italian composer and musician of the late Renaissance and early Baroque periods, primarily associated with the genre of sacred music. He was born in Milan and later became a prominent figure in the musical landscape of the time, serving as a maestro di cappella at various churches, including the prestigious Milan Cathedral. Porta is best known for his contributions to the development of the early operatic form and for his sacred choral works. Notable compositions include his collection of motets and his involvement in the early stages of opera, specifically with works like "L’Adelaide di Borgogna," which showcases his ability to blend dramatic narrative with musical expression. His influence is significant in the transition from Renaissance polyphony to the more expressive styles of the Baroque era. Porta's emphasis on melody and emotional depth in vocal music paved the way for future composers, particularly in the realm of opera. His work contributed to the evolving landscape of Italian music, helping to establish a foundation for the dramatic and emotive qualities that would define Baroque music.