MAMAMOO (Korean:? ) is a four-member women's group under WA Entertainment, a subsidiary of Rainbowbridge Agency. Its members are Le Song, Xian Xing, Hui Ren and Hua Sha. "MAMA" is the first word learned by all newborn babies, regardless of race or country, which means that MAMAMOO expects to bring music beyond nationality and gender to the public and show primitive and instinctive music. MAMAMOO officially adopted M on June 9, 20 14. The countdown debuted with the song "Mr. Ambiguous". The official fan name is "Cleisthenes", and the official aid is radish-shaped lanterns (radish is Korean? , sounds like Cleisthenes).