From the Manufacturer

Lily is an official character of a singing synthesizer application software powered by Yamaha's Vocaloid2. Her basic databanks were jointly-developed by Yamaha and Avex Management Co., Ltd. Internet Co., Ltd. is the distributor and also provide her effective support for the users. This was also announced by t-kimura (Takashi Kimura), once a member and now a music producer of m.o.v.e, on his Twitter. Lily was published on August 25, 2010 and her design is by KEI. The data for the voice was created by sampling the voice of Yuri Masuda, a Japanese vocalist of the Japanese musical group m.o.v.e.