Nu Virgos (also known as ВИА Гра - an allusion both to VIA Gra due to the first three letters, which stand for vocal-instrumental band, and viagra) is a Ukrainian/Russian girl group, that hit the charts in their country in September 2000 with their first single "Popytka No. 5". Their first success in Europe was in May 2004, with the single "Stop! Stop! Stop!".[citation needed]. The group is known for their frequent lineup changes, with 11 different individuals having at one time been in the group. The group was co-created by Dmitriy Kostyuk and Konstantin Meladze. Kostyuk is the manager of the group and the co-producer of the group's albums. Meladze is the writer of the group's songs and the co-producer of the group's albums.