Johann Joseph Fux

Johann Joseph Fux (German: [ˈjoːhan ˈjoːzɛf ˈfʊks]; c. 1660 – 13 February 1741) was an Austrian composer, music theorist and pedagogue of the late Baroque era. His most enduring work is not a musical composition but his treatise on counterpoint, Gradus ad Parnassum, which has become the single most influential book on the Palestrinian style of Renaissance polyphony.

From Wikipedia, released under the terms of the CC-BY-SA license.