Activision has revealed that Nirvana’s mumbly singer Kurt Cobain will be joining the roster of guest appearances in the upcoming Guitar Hero 5.

"Kurt Cobain is one of the most recognizable frontmen in rock 'n' roll history and it's an honor to have two of Nirvana's masterpieces included in Guitar Hero 5," said Tim Riley, Vice President of Music Affairs for Activision. "This is the first time the original recording of 'Smells Like Teen Spirit' has ever been licensed in an entertainment property and we're thrilled to offer Guitar Hero fans exclusive access to the unreleased live version of 'Lithium.'"

The former lead singer and guitarist of Nirvana will be featured as a playable character, performing two of the band's hit singles from their 1991 genre-defining album Nevermind: "Smells Like Teen Spirit" and a special, previously unreleased live recording of "Lithium”.