Kagamine Rin & Len (Japanese: 鏡音リン・レン), officially code-named CV02, are a pair of Vocaloid software developed by Crypton Future Media, headquartered in Sapporo, Japan. Their official moe anthropomorphism consists of a pair of twin vocals, a boy and a girl both age 14 years old, respectively named Len and Rin. They use Yamaha Corporation's Vocaloid 2 and Vocaloid 4 singing synthesizing technology. Their voices are sampled by Asami Shimoda. They have performed at live concerts together, as they are each other's mirror image.
