"Clack bringer"  moonriver919 posts her account of Clay's surprise appearanceat the David Foster and Friends concert in San Jose:
 

"I’m glad to read that you guys appreciate the clack. I know the video quality and camera work is awful, but now I really know how talented the more seasoned clack gatherers are. You guys are the best!

David Foster had a schtick going on (which I'm sure you guys have heard about by now). After singing a note, David would ask a member of the audience in the front row to come up to the microphone and sing it back to him. The first two times, the audience members were normal audience members. But the third and final time, it was Clay!

David sang a note, and Clay sang it back but the note was too high. David said something to the effect of what he can do when he produces and then sang another note. Clay sang it back perfectly. David then introduced Clay as his brother-in-law, mentioned that his sister and Clay had a baby together, and invited Clay to come up on stage. I started to flip out, said OMG about 20 times in a row, and set my digital camera to video mode as fast as I could!

Clay looked great! His hair was brown, not red. I'm glad that someone gave him a jacket to wear on stage so he could comply with the "dress code." Clay was very enthusiastic during Ruben’s set. From where I sat (very far away from the stage), I could see Clay in the front row clapping his hands above his head after Ruben’s songs and waving his arms around after Ruben’s request. Near the end of Charice’s set, someone came by the front row, and Clay ducked and ran along the front row to go backstage."