Few bands from the '80s have aged with the consistency and conviction of Stryper. At San Antonio's Aztec Theatre, the yellow-and-black warriors proved that four decades into their career, they're still delivering a brand of melodic metal built on soaring harmonies, precision musicianship, and unwavering passion. Michael Sweet remains one of hard rock's most underrated vocalists. His voice has lost little of its remarkable range, effortlessly moving from gritty verses to the u