Louis Feuillard was a French string quartet cellist, a chamber musician, and a Conservatoire de Paris educator renowned for his educational instinct, primarily as a famous cellist Paul Tortelier. His regular workouts cover the essential facets of cello technique, including exercises for neck and thumb and bow exercises. They have reached the traditional cello education since their publication in 1919 due to the logical structure of exercises. He was known for his educational instincts, mostly as a professor of the well-known cellist Paul Tortelier. His journaliers include the most critical facets of cello technique, including neck and thumb exercises as well as bow exercises. After their publication in 1919, the exercises have been part of the mainstream cello learning curriculum, owing to their conceptual framework.