Keffer Collection of Sheet Music, ca. 1790-1895 Content and design by John Bewley

John Christopher Moller, composer, organist, music publisher, and concert manager, was born in Germany. He lived in London for almost a decade before emigrating to the United States in 1790. He spent a brief period in New York in 1790 before moving in October to Philadelphia where he joined Alexander Reinagle as manager of the City Concerts programs from 1790 to 1793. He also lent his skills as pianist, harpsichordist, and violist to these concerts. In addition, Moller served as organist at Zion Church beginning in 1793.

One of the earliest music publishing firms in the United States was formed in 1793 when Moller was joined by Henri Capron in the firm of Moller & Capron. The firm's first publication, Moller & Capron's Monthly Numbers, was issued as a periodical. Based on the number of extant issues, it seems likely that Moller & Capron only issued four items in this series. The partnership ceased operation by the end of 1793 possibly due to serious illness suffered by Capron. Moller continued to publish music under his own name in New York from 1796 to 1803.

Moller moved back to New York in 1796 and replaced James Hewitt as a manager of the New York City Concerts. While in New York he also served as organist at Trinity Episcopal Church.