Precisions on Counterpoint rules is a book written by Charles Koechlin in five chapters. Focusing on the counterpoint, this volume highlights all the rules related to it. It features both lessons and examples with comments, to help with understanding.
Appendix x001A focus on Gregorian songs and tunes. This theory book is definitely one of the most useful ones for any composition that includes counterpoints or for any composer who would like to use them in future works. Charles Koechlin (1867-1950) was a French composer, professor and writer. He composed numerous symphonies and symphonic poems, some instrument and orchestra, orchestral and chamber works as well as some songs.