Kamen Joshi

Kamen Joshi (仮面女子, Mask Girls) is a Japanese female idol group consisting of four teams. The name refers to the members of the group wearing masks which cover their faces during the performances of most songs and much of the promotional material, with the type of mask varying between the various subgroups. The music of Kamen Joshi is usually rock or heavy metal, often with rap verses. The members rarely play instruments themselves and most performances are presented with playback rather than with a live band.