The singer joins Muse, Green Day next month
Kanye West and Eminem also get several nods
Plus Simple Minds, N.E.R.D., Jacky Cheung for event
The pop star will join Kanye West and Ne-Yo at Los Angeles ceremony
Special-priced seats will go on sale tomorrow (May 29)<br />
Matthew Zeghibe says the music industry is manipulated
Singer denies the screeching voice is authentic<br />
Tickets can be won from a chewing gum brand
Chris Brown and Rihanna are no-shows
Singer hits out at star for singing her song for the US president