Prince and Springsteen duet? Did this happen?

Someone told me Springsteen was a surprise guest at a Prince concert (as a performer; there are interviews of Springsteen mentioning going to a Prince concert as a spectator). Supposedly it happened in L.A. Did this really happen? What did they sing?

 

Sounds interesting. Maybe they admire each other. It wouldn't be so surprising, you know.

After all, they are both about the same height!

 

There's ONE person who has it:

http://www.geocities.com/cowwig/

"I have other rare Prince material on cassettes(all the above are on cd) including the legendary LA Forum show with Bruce Springsteen on the encore, if interested just email me for a separate list."

 

Doing some quick research, I found that the show was on February 23, 1985, at the Los Angeles Forum. Yes, it really did happen.

Unfortunately, the setlist I found for this just said "Bruce Springsteen Solo" as his featured number, so the setlist chronicler must have been more of a Prince fan than a Bruce fan.