Trans-Siberian Orchestra has become a tradition for many rock-centric revelers since the group’s 1999 inception, playing for more than one million people on the 2006 Winter Tour. TSO entices audiences with their cross-genre blending of metal and progressive rock, classical themes, great storytelling, and unequalled staging and pyrotechnics. $38-58, 3 & 8pm, AT&T Center, One AT&T Center, (210) 224-9600 or ticketmaster.com.