Walker calls the wife up on stage and when her husband walks out to surprise her, Clay was empathizing so much at the reunion, he had trouble singing. He tells the Associated Press, "...it was a little bit difficult to sing, seeing all the tears flowing....to know that music...that country music was able on that night to bring them together." Truly a sweet moment, I'm sure. The emotional surprise was filmed for the Lifetime TV show, "Coming Home" which airs this Sunday. Clay Walker's one of the best emotional singers out there. Check this out.