thoroughly assimilated into Chinese culture that it might be widely regarded as a Chinese folksong in China called "Two Tigers". Influence Science In the fields of chemistry and cheminformatics, the circuit rank of a molecular graph (the number of rings in the smallest set of smallest rings) is sometimes referred to as the Frèrejacque number. Popular culture A version of the tune appears in the third movement of the Symphony No. 1 by Gustav Mahler. Mahler presents the melody in a minor key instead of a major key, thus giving the piece the character of a funeral march or dirge; however, the mode change to minor might not have been an invention by Mahler, as is often believed, but rather the way this round was sung in the 19th century and early 20th century in Austria. Francesca Draughon and Raymond Knapp argue that Mahler had changed the key to make "Frère Jacques" sound more "Jewish" (Mahler converted to Catholicism from Judaism). Draughon and Knapp claim that the tune was originally sung to mock non-Catholics, such as Protestants or Jews. Mahler himself called the tune by its German name, "Bruder Martin", and made some allusions to the piece being related to a parody in the programs he wrote for the performances. Interpretations similar to this are quite prevalent in academia and in musical circles. The French performer known as Le Pétomane entertained live audiences in the late 19th and early 20th centuries with his own unique rendition, according to the BBC. Henri Bernstein, a French playwright, wrote a comedic play entitled Frère Jacques (translated as Brother Jacques) with Pierre Veber in 1904. Frère Jacques is a type of semi-soft cow's milk cheese with a mild hazelnut taste, produced by Benedictine monks from the Saint-Benoit-du-lac Abbey in Quebec, Canada. Four French singers, brothers André and Georges Bellec, François Soubeyran and Paul Tourenne formed a comedic singing group in 1944 known as Les Frères Jacques, even though none of them were named "Jacques". The group name was a bit of a play on words since a common French expression, "faire le jacques", means to act like a clown. They had successful careers over the next few decades. Leonard Bernstein made use of the song to illustrate counterpoint in his television program What Makes Music Symphonic? (one of a series of 53 programs, the Young People's Concerts with the New York Philharmonic, combining music