Full moon is called a blue moon. The term "blue moon" used in this sense may date to as early as the 16th century, but it became well known in the United States due to the "Farmers' Almanac" (published since 1818). According to the "Farmers' Almanac", a "blue moon" is the third full moon in any period between either solstice and equinox, or between equinox and solstice, (calculated using the mean tropical year), which contains four full moons. These seasons are equal in length, unlike the astronomical ones, which vary in length depending on the Earth's speed in its elliptical orbit round
Autumn Moon Over the Calm Lake folk music with the Guangdong style for which he is most famous for. A piano transcription was written by Chen Peixun and is popular in the repertoire of many Chinese pianists. Du, Yaxiong. "Traditional Music Composers", article in Encyclopedia of Contemporary Chinese Culture p. 843, edited by Edward L Davis, Routledge 2005. Autumn Moon Over the Calm Lake Autumn Moon Over the Calm Lake (平湖秋月) is a Chinese folk song that was written by Lü Wencheng in the 1930s and is considered his most representative piece. He composed the music on a visit to the famous West Lake in Hangzhou,