“Every great composer has a white elephant – a piece as grand as it is unsuccessful, a flop that only genius can create, and all the more embarrassing for that. Adventurers like Leonard Bernstein and Stephen Sondheim, whose output is marked by an almost compulsive search for new ground, were fated to have at least one. Bernstein’s was the gargantuan 1971 Mass … Sondheim’s case stretched over 15 years with a musical whose titles ranged from Wise Guys to Bounce to Gold! until finally becoming Road Show late last year.”