This past weekend was held the Summer Sonic 2010 in Tokyo and Osaka.

Summer Sonic is a music festival where they act in two days about 100 bands / DJ 's divided into about 50 groups a day or so, with the same groups that act in Tokyo and Osaka but on alternate days.

I went with a couple of friends on Saturday and not just two days, where the proceedings started at 10.00am and ended at 5.00am the next day.

On Saturday, groups acted as Jay-Z, The Offspring, Nickelback, Nas, and A-Ha Kreva among many others.
Particularly the concert had more desire to see was that of Jay-Z and the truth is that the concert was great.

If you want to see the whole billboard groups acting simply Visit the official site .