Kaori & GRACE "Genki Rockets (元気ロケッツ, Genki Rockets) is a hybrid band made up of unnamed musical artists. The face of the group is a fictional character named Lumi, an 18-year old girl who was born in space on September 11 2037 and has never been to Earth. Genki Rockets is unique in that it is a band composed entirely of unnamed musicians and that their music videos are entirely computer-generated, including the band's lead character, Lumi. The visuals are created by Japan's Glamoove, Inc. They are also unique in solely using holograms for live performances, such as their performance at Live Earth.

However, Genki Rockets is similar to the virtual band Gorillaz, in the fact that while none of the virtual band members represent actual people, the real musicians in the band have become well known."

Genki Rockets @ Wikpedia
Heavenly Star PV
Star Line PV

I love the rock feel Star Line has!