Woo! could be the official sound effect of Youth America Grand Prix and was certainly an exciting part of the YAGP 25th Anniversary Kick-Off Stars of Today Meet the Stars of Tomorrow Gala on Tuesday, April 11. An elongated balance in a tilted developpé side, a cool quadruple pirouette, or a tornado-ing five-forty, all were met with raucous applause and support, with extra enthusiasm from the excited students in the auditorium..