When Bush performs their massive hit Glycerine, front-man Gavin Rossdale stands alone on the stage before being joined by the rest of the band.

But, at a concert in Los Angeles, before the rest of his band joined him, a special guest walked out on stage while Rossdale was performing Glyercine.

No Doubt singer Gwen Stefani, Rossdale's wife, joined her husband to perform the song.  The video is above.