Gwen Stefani and Gavin Rossdale Perform “Glycerine”

Just 17 years earlier, Gwen Stefani and Gavin Rossdale met for the first time, backstage at KROQ’s annual Almost Acoustic Christmas event. To commemorate the occasion, this year the couple hit the stage together to perform Bush's heralded track, "Glycerine." With guitar in hand, Rossdale kicked things off, as Stefani then surprised by walking out later on. To check out just what went down from the married tandem, press play above.