I think his appearance at this charity event (the NY Blood Bank was also a sponsor) was the only one for David Jay. And if I'm not mistaken, it was Frid's first since the 70s. And it must've gone well because he appeared at his first ShadowCon (in California) not long after. There, he said the audience never did get to see those clips he mentions in Joe's tape because a drink was spilled on the video player. Frid also said he helped put the clips together (the first indication, perhaps, that he would later host his own website?) to be shown at the disco, but they did get played in California.