KT Niehoff/Lingo Productions

Raise your hand if you think dance performances should involve more audience interaction. Longtime Seattle choreographer KT Niehoff thinks so, too, and she’s distilled a year’s worth of artist-audience experiments into this new performance, Collision Theory: The Finale. Teaser: The dancers will wield hammers and wear clear, bell-like domes on their heads. Guess what happens next.

April 18-21

8 p.m.

On the Boards
100 W Roy St.

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