'Bring It On: The Musical's' pumped-up kicks
Performers balance song and dance with flying spins and other jaw-dropping feats in this new show at the Ahmanson. After all, it is about competitive cheerleading.At the pre-show warm-up for "Bring It On: The Musical," performers in their 20s are stretching and assuming yoga postures, others are jumping rope or jogging softly in place. It's what you might expect from any cast of a musical. Then suddenly, downstage ri…