Alex has just taken the stage
he is showing off the peripherals
He will be the chairman of the Rock Band music advisory board.
2:46Celebrity alert! Little Steven takes to the stage
There will be a Rock Band advisory committee set up which will include celebrity musicians, who will help decide which songs to include.
2:46Every single week after the game is released there will be a new batch of songs online. They aim to have thousands of songs online.
2:45Rock Band is not just a game or a title, it's a platform for delivering and exploring music in a new way, he says.