Vocaloid2 Kagamine Rin/Len Append A product summary and specification Software which can generate a realistic singing voice only by inputting a melody and words Hardware requirement: [windows] Correspondence OS: Windows XP/Vista CPU: Pentium 4 Two or more GHz / Athlon XP 2000+ or subsequent ones Memory: Not less than 512 MB HDD: Not less than 2 MB Media: DVD-ROM a DVD-ROM drive and a sound card -- required * -- at the time of activation, environment connectable with the Internet is required Vocaloid2 Character Vocal Series 02: Kagamine Rin/Len is Required.