2001.09.DD - Guitar One - Interview with Dave Navarro [excerpts]

One example would be your involvement with the world's first taste of new Guns N' Roses--your solo on "Oh My God" from The End of Days soundtrack (Geffen).

Dave: The truth is, I wish there was an interesting story, but it was honestly like just doing a session. Axl and I had been trying to play for years, and it just never worked out for one reason or another. He just called me and it happened to be a good time, so it worked out. But I just kinda went down there and I spent maybe an hour and a half in the studio, played some stuff, and went home.

[...]

Did you ever consider being a part of the version of GN'R Axl was putting together?

Dave: No, only because I already had my hands in my new book and in this record and the possibility of a Jane's reunion. I didn't wanna bite off more than I could chew. And honestly, I love him as a person and I love his music, but I don't know if it's necessarily suited for me personally.

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Source:
http://www.angelfire.com/rock2/2001axl//articles/DaveNavSnip.html