Memory:Brian McAllister
The only time I was privileged to see GG was at the Paradise in Boston, on November 11, 1977. This is the same show described by Lindsey Pratt, and the same tour as the New York show mentioned by Jandpdon@aol.com.
I was a freshman in college, and only marginally familiar with GG at the time, but a group of friends were going and it sounded like fun. It turned out to be one of the most memorable concert experiences I've ever had.
The entire show was amazing, but my clearest memories are of the Ray + quad echo violin solo described by Lindsey (it seemed like he was playing 5 violins at once), and the group drum "solo", during which they killed all the stage lighting and turned on strobes.
In what is easily the worst booking decision I've ever personally experienced, the opening act was Dr. Feelgood (surely the same "completely forgettable punk band" mentioned by Jandpdon), and they got the worst reception I've ever seen from an audience. By the second song, the crowd was booing and yelling for GG. By the fourth, the band was responding in typical punk fashion with spitting and possibly beer tossing, which the audience returned in kind. They left the stage after at most 20 minutes, to much applause.