Typically, the above examples of potential defects are most notable only under closer inspection. Author: Callan, Fr Charles J., OP & Fr John A. McHugh, OP Editor: N/A Publication Year, Page Count, & Other Details: 2023 (reprint of 1960 ed.).

But it is a very large and heavy book. Certainly this book is a must for those who chant the Divine Office in choir. But what about the average traditional choirs in churches, chapels and schools?. Enter the Liber Brevior.