Parochial music corrected [electronic resource] : intended for the use of the several charity-schools in London, Westminster, &c. as well as for all congregations: Being plain and distinct rules for the more pleasing and correct performance of Psalmody, By the Children, &c. in their respective parish-churches. with psalms, hymns, and anthems, set to music, Which, being suitable to the Occasions of Charity-Sermons, may be sung on those Days. To which is added An easy Introduction to singing. The whole adapted, written, and composed, by H. Heron, Organist of St. Magnus, London-Bridge.