Firth and Pond reformed under the name Firth, Pond & Company. Publishing of sheet music made up their core business, and the company played a key role in the popularizing of works by songwriters such as Stephen Foster and Dan Emmett. They preferred material from the minstrel shows to more serious fare, although the company did publish material such as Foster's non-blackface ballads and songs by Louis Moreau Gottschalk.
In the 1850s, demand steadily grew in the United States for guitars. Firth, Pond & Company offered the instruments under its imprint, advertising, "Guitars of Our Own Manufacture, of Superior Tone and Finish, in Lined Case, for $15 to $50". These were actually created by guitar makers such as C. F. Martin and James Ashborn. By 1855, Firth, Pond & Company sold $50,000 in pianos and $30,000 in guitars and other instruments; sheet music revenues were only $70,000.