"The guy just wrote beautiful songs. When someone goes that honestly straight to the core of who they are, what they're feeling, and was able to kind of put it out there... it's amazing. I remember hearing it when Nevermind came out and just thinking, 'We've finally got our Beatles...' and ever since then it's never happened again." Green Day rocker Billie Joe Armstrong pays tribute to Kurt Cobain as the 20th anniversary of his death looms. The Nirvana star took his own life on 5 April, 1994, aged 27.