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The choreographer Rena Butler set off the stillness of captivity against the restless churn of the surf.

From Huang Ruo’s ‘Angel Island,’ at BAM.

And the director Matthew Ozawa assembled all those separate media into a persuasive package.

But rather than juice the story with agitated music, Ruo overlays it with reverent chorales.

Thats rarefied company to want to join.

InAngel Island, the emotional power builds quietly, then levels off, letting the focus dissipate.

Those now here are corrupting the morals and undermining the framework of our social structure.

Even Ken Burns would have abridged that text.

Some minimalist operas depend on a sense of suspended animation, on the immediacy of a perpetual now.

Its a drama about going nowhere.