Grohl planning Nirvana tour with 'secret frontman'

Dave Grohl is reportedly planning a Nirvana anniversary tour with a "secret frontman".

The musician rejoined surviving Nirvana members Krist Novoselic and Pat Smear to perform new track 'Cut Me Some Slack' with Sir Paul McCartney at the 12.12.12 benefit concert for victims of Hurricane Sandy at New York's Madison Square Garden last week