Gavy NJ return with their music video for the song “Hello” ft. Hip Job. 1theK states, “This year, Korea’s major female vocal group Gavy NJ has turned 10 years since debut. The ladies return with a mini-7th album, Part.1 “Hello”. The title song “Hello” is a retro number. In this song, Gavy NJ maintains a rather delicate tone of voice,…