There have been rumors of a Broadway musical based on Nirvana's Kurt Cobain is in the works. Courtney Love has denied the rumors in an interview with The Observer, telling the newspaper "there will be no musical" as "sometimes it's best just to leave things alone".
I was thinking Act 4, "Crazy Hole in my Life" scene would have been interesting on the stage. Guess you're stuck with Green Day's American Idiot musical.
If you want more details on what Courtney Love has to say about the musical then go here: http://www.nme.com/news/courtney-love