on the official site, it says 'professional involvements and appearances *******: Nirvana' , among other artists.

when did they collaborate with nirvana??

perhaps one of them played cello / violin on the unplugged cd??

does anyone know?

Melora played cello for them during the '94 tour. I think there's a picture of it on the Rasputina website.

http://www.rasputina.com/images/cam03.jpg