This song was called Hello,hi sang by a Swedish pop group-Dolly Style.This song is really catchy and cute and I think that this song is suitable for them to sing!! I hope you like it^^VOCAL: 初音未來，夏語遙，GUMIust: Eden-p (It will release soon)Instrumental:djpoMFHere is the original version:https://www.youtube.com/watch?v=hLYvOS1RmuM