Foss responded with incredible energy. He worked to establish "the largest possible list in the shortest possible time", adding titles at the rate of over 200 a year; eight years later there were 1,750 titles in the catalogue. In the year of the department's establishment, Foss began a series of inexpensive but well edited and printed choral pieces under the series title "Oxford Choral Songs". This series, under the general editorship of W. G. Whittaker, was OUP's first commitment to the publishing of music for performance, rather than in book form or for study. The series plan was expanded by adding the similarly inexpensive but high-quality "Oxford Church Music" and "Tudor Church Music" (taken over from the Carnegie UK Trust); all these series continue today. The scheme of contributed essays Foss had originally brought to Milford appeared in 1927 as the "Heritage of Music" (two more volumes would appear over the next thirty years). Percy Scholes's "Listener's Guide to Music" (originally published in 1919) was similarly brought into the new department as the first of a series of books on music appreciation for the listening public. Scholes's continuing work for OUP, designed to match the growth of broadcast and recorded music, plus his other work in journalistic music criticism, would be later comprehensively organized and summarized in the "Oxford Companion to Music".