This been asked and answered so many times.
Song Title is “The secret garden“ by Kosaki Satoru
~~~~~ Enjoy the Video! ~~~~~
.: Info about this Video :.
Japanese Title: 初音ミク -Project DIVA-
English Title: Hatsune Miku: Project Diva
Platform: PlayStation Portable, Arcade, PlayStation 3 (for Dreamy Theatre)
Played on: PlayStation Portable
Developer: Sega
Publisher: Sega
Genre(s): Rhythm game
Mode(s): Single-player
“Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for “fair use“ for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.“