The custom mirror JEM - which Vai nicknamed 'Bo' - was taken from outside the venue on December 12 (Saturday) where he and a host of other musicians including Tom Morello, Zakk Wylde, Billy Sheehan, John 5, Mike Portnoy and Nuno Bettencourt were performing.

The show was set up to raise funds for guitarist McAlpine, who was recently diagnosed with colon cancer and had to postpone a string of tour dates while he undergoes treatment.