Dave Markey is a documentary film maker and a man who had a good relationship with Nirvana. He recently posted concert footage he shot backstage at the LA Forum in December 1993 during the bands In Utero tour. Kurt died in April the following year.
Youtube Video Description:
"20 years ago tonight (December 30, 1993) I stood on Kurt's side of the stage at my hometown's Los Angeles Forum and captured the last set I would see of this band. A band that I had worked with, toured with; people that I would call my friends. A band that both the world and myself really loved (can't really say this has happened since.) Within just a few short months it would sadly all be over. Sharing a few songs here; a couple covers (Vaselines' "Jesus" & Bowie's "Man Who Sold The World") and All Apologies. I'm glad to have documented this show, as well as their pre-fame fun in 1991. www.wegotpowerfilms.com."