“Grey Gardens” and “Spring Awakening” are not your parents’ Broadway musicals, and they may mark a significant shift in musical theatre. “These two daring, surreally unusual musicals — both transfers from the 2005-06 Off-Broadway season — have dominated Broadway during the past six months. Together, they will likely walk away with many of the Tony Awards in the major musical categories. … In Times Square, audacious visions are the new black….”