The book took is entitled 'Heard Melodies Are Sweet' and took three years to write. As Edmund explained, "the orchestra occupies a special place in London life, with concerts in the Royal Festival Hall, performances at Glynnbourne, and education work involving teacher training, as well as work with children."

Edmund researched the orchestra's archives, interviewed players and office staff past and present. Among the interviewees was broadcaster John Amis, who worked for them during the war.