Thoughts on the importance of the sabbath, with a caution not to trespass on the design of it: also on the use and advantages of music, as an amusement to the polite part of mankind. Likewise on the Abuse of Music in Churches as practised by many Organists. With several religious, moral, and political reflections on modern inattention to the true art of living, with regard to some of our most fashionable amusements. In nine letters. By Jonas Hanway, Esq;