Questions about a Japanese singer?

Question:

Okay well I heard that there's a group of 6 girls in Japan and they mix the faces to make one whole face of one girl. I don't know their names and I don't know what the video is called. If you don't know the answer, I'll provide more details. So in the video, there's a face. They put the eyebrows of one girl, the lips of another girl, the eyes of one of the girls, the chin of someone in the group and the forehead or something. Does anyone know this video? If you do, can you please tell me the name of the clip? Thanks! :D

Answer:

The group's name is AKB48 and a singer's name is Eguchi Aimi. She was made for commercial film.

http://www.youtube.com/watch?v=z0lDK5Flm…
http://www.youtube.com/watch?v=c7nhZo_vU…