Much as they worshipped him as a maestro, the Viennese never really warmed to Leonard Bernstein the “serious” composer. Now that he’s been gone for 35 years, could the fabulous but overstuffed comic operetta Candide make his case? That might depend on what version they hear. The score went through countless revisions, never finding a definitive form. A “variorum” edition that integrates the false starts along with the afterthoughts is emphatically not the way to go. Happily, the conductor Marin Alsop, a proud Bernstein protégée who has commissioned new texts in several languages for the choral finale of Beethoven’s Ninth Symphony, isn’t the type to push for a Pyrrhic victory. The director for the Vienna production is Lydia Steier, an American fluent in the iconoclasm that German-speaking audiencess demand. Matthew Newlin stars as the orphan Candide, perpetually born yesterday. —Matthew Gurewitsch