On September 12, 2018, Dan Balan released a new single called "Numa Numa 2" in association with Marley Waters. After a few days, the song reached #1 in the Japan Charts and was a great success. He then had a small show/concert in Japan singing Numa Numa 2. The song still remains popular but the other 2 members of O-Zone were not happy with the song since that was the group's song and he decided to remake it. Arsenie (Arsenium) and Radu (RadU) thought that Dan Balan was being a little selfish in an interview in Romania.