Mousou Kagaku Series: Wandaba Style - Mix Juice no Tsukurikata

Mix JUICE's members are about to give a concert, they are interviewed by journalists about how the band were created. Each member gave a different story! Then, each girl sing alone but only a part of the crowd is moved. Finally they perform together and then, we learn from the producer Hanagata how he recruited the girls to give birth to Mix JUICE.

(Source: AniDB)