Can't go to Magical Mirai, Hatsune Miku concert on August 30th? No worries! Niconico, the Japanese online video sharing website will broadcast on their website!
And in celebration of over 2 million premium members on niconico, premium members can watch it free of charge! Free members can purchase tickets to watch it for 1,500 yen.
Please find more infomation here: http://live.nicovideo.jp/watch/lv148001958