Eri Kitamura
CUL was released for the VOCALOID 3 software based on the voice of Eri Kitamura. She sings in Japanese and was released by Internet co., Ltd on the December 22, 2011. CUL originally started out as the mascot for the TV documentary "VOCALO Revolution" which focused on the impact VOCALOID had had on the Japanese culture. Internet Co., Ltd noted that CUL was their most difficult vocal to produce in an interview and the vocal was re-done twice, though did not use any new recording sessions.