If you want a shorthand way to explain the death of hair metal and the rise of grunge (and "alternative") music in the early '90s, you simply have to say "Nirvana" and even casual music fans know what you mean. But is that really an accurate description of the massive changes that took place in the music world at that time? In this episode,  Michael, Keith and Scott debate whether Nirvana gets too much credit for the 1990s musical revolution.