No, MAMAMOO is a women's singing group launched by RainbowbridgeWorld on June 9, 1965. It consists of four members: Jin Rongxian (Ode to the Music of the Sun), MoonByul E (Moon Goddess), Jung WheeIn (Huiren) and an Hui Zhen (and Vasa). Mamamoo didn't collapse. On June 8, 20 14, the first extended drama "Hello" was released. On June 19, the title song "Mr. Ambiguous" officially debuted in MCountdown.