Singer's most famous work was his new edition and English translation of the "Authorized Daily Prayer Book" (published in 1890), a work which has gone through many large editions and which has probably been the most popular (both with Jews and Christians) of any book published by an English Jew. The Hebrew text was that of Seligman Baer's classic "Avodat Yisrael", to which Singer provided an "authorised" version of the liturgy capable of standardising and stabilising the synagogue service and helping to create an "established" Judaism in Britain and the Commonwealth (the so-called "Minhag Anglia".)