"Pennyroyal Tea" by Nirvana

From MTV Unplugged - the show which gave me my first real appreciation for the work of Kurt Cobain and Nirvana - it's Cobain himself with Krist Novoselic and Dave Grohl; originally aired in December 1993, and later a hugely successful album, it was the band's last televised appearance together.

Pennyroyal Tea appeared on Nirvana's album In Utero, and was slated to be a single in April 1994, when Cobain was found dead; its B-side, tellingly, was to be a song entitled I Hate Myself and I Want To Die.
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