G3 is a concert tour organized by guitarist Joe Satriani featuring him alongside two other guitarists. Since its inception in 1996, G3 has toured most years and has featured many guitarists, including Steve Vai (Satriani's former student), Eric Johnson, Kenny Wayne Shepherd, Yngwie Malmsteen, John Petrucci, Robert Fripp, Paul Gilbert, Uli Jon Roth, Michael Schenker, Adrian Legg and many other special guests, including Tony MacAlpine, Johnny Hiland, Steve Lukather, Steve Morse, Chris Duarte, Andy Timmons, Neal Schon, Gary Hoey, Brian May, Billy Gibbons, Johnny A, George Lynch, Patrick Rondat, Herman Li, Alejandro Silva, and Eric Sardinas.
1996
The first tour took place in 1996. The North American G3 tour featured Joe Satriani, Steve Vai, and Eric Johnson. Performances were held from October 11, 1996 to November 8, 1996. Kenny Wayne Shepherd and Adrian Legg were the opening acts.There were special guests on this tour, who included Neal Schon in San Francisco, Gary Hoey in San Diego
Source:
http://en.wikipedia.org/wiki/G3