THE IDOLM@STER GREAT PARTY Go to the NEXT STAGE!! was a mini-concert tour that took place from late October (28th) to early November (3rd and 4th) 2007 at O-EAST in Shibuya, Tokyo and at BIG CAT Shinsaibashi in Osaka respectively to promote the MASTER ARTIST CDs and announce the release of THE iDOLM...