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Heck, John Casper (1740-(?))
A Complete System of Harmony or a Regular and Easy Method to Attain a Fundamental Knowledge and Practice of Thorough Bass; with the Nature and Various Use of Concords and Discords explained, Conformable to the Modern Composition. Illustrated by a Variety of Examples. Entered at Stationer's Hall, and Published according to Act of Parliament. Printed for, and Sold by the Author, in Cambridge-Street, five Doors from the sign of Newcastle, Broad-Street, Soho Self-published: London, [1762/1768]. Small Quarto. 46 pp. (26 pp. text + 20 pp. musical examples). . Period marbled boards with vellum spine with gold tooling and leather label. Some foxing on a few pages and some transfers, but overall a very attractive copy.
A scarce work of the English music theorist who is known for bringing to his work a knowledge of German music and musical theory.