Księżyc, a Polish experimental folk group formed in 1990, initially featured vocalists Agata Harz, Katarzyna Smoluk-Moczydłowska, and Ukrainian singer Olga Nakonieczna. In 1993, Księżyc released their debut album Nów, recorded at Saint Vincent's Church in Wrocław. The group continued to tour across Poland, Hungary, and the Czech Republic, releasing their self-titled album Księżyc in 1996 on OBUH Records. After a period of inactivity, Księżyc reunited in 2014 for concerts and released their third album Rabbit Eclipse in 2015.