Courtney Love is preventing Nirvana's music being used for a "jukebox musical."

The "Doll Parts" singer - widow of grunge band's late songwriter Kurt Cobain, and shareholder in the rights to the band's back catalogue - sees herself as the only person stopping the group's songs being used in commercials, or for a musical stage production like Green Day's "American Idiot" or Queen's "We Will Rock You."

"Somebody has to guard the gates of this thing. Because you know what would happen? The second I sell [the rights], it becomes a jukebox musical, makes a billion dollars, and you've got jazz hands on Broadway. Or [Kurt will] be in Gatorade commercials. I will never sell the f***ing stakes I have in it, because no one else will bother protecting him," she said.

Courtney, 48, also thinks some of the people who try to start relationships with her are only really after the rights to the Nirvana catalogue: "I haven't slept with a musician in ages. I go for the safe business guys, and then they see [the Nirvana publishing rights] and they go, 'Boing! You should sell that s**t!'"