I found these videos very interesting - almost chilling - to watch. Check out very early Nirvana in rare form before they hit it big and ushered in an entirely new genre of rock music.
Check out the story at the original post via Open Culture here.
1988-era Nirvana performs "About A Girl"
And here the band switches instrument roles for a cover of the 1974 Terry Jacks hit "Seasons In The Sun". Who knew Kurt Cobain was such a fan?