The Winter Garden Theatre was overrun with kids (and their supportive parents!) as School of Rock – The Musical held an open call audition for the hit show. The young rock star hopefuls banged away on keyboards and drums, plucked away on basses, strummed guitars and displayed their vocal chops for the casting agents as Andrew Lloyd Webber himself looked on. Playbill met up with Chelsea Glover and Andrew Sullivan; both youngsters had traveled across the country for this once in a lifetime opportunity.