Before you get too excited the footage is with Courtney Love.  The pair are singing an unreleased song called  "Stinking Of You".

The footage is from a documentary called "Hit So Hard".  It is the story of former Hole member Patty Schemel.

In  the documentary Love apparently says:

"Kurt used to hang around us, 'cos he hated his band [Nirvana]."

The film premiers in New York on March 28th.

Any interest in seeing this?