Argentine dance sensations Juan Carlos Copes and Maria Nieves spent almost 50 years thrilling audiences with their ballroom pyrotechnics. Their offstage romance was anything but enjoyable. Copes began his emotional withdrawal almost immediately after the “I do’s” were exchanged. Given his predilection for chorines, compounded by a stoical sense of macho entitlement (“She belongs to me, but I don’t belong to her”), their private life experienced more varied steps and dramatic pauses than even their most frenzied dance routine. (The embittered couple no longer speak and only appear together in archival footage.) Instead of newsreels intercut with talking heads, director German Kral interjects a young couple (Alejandra Gutty and Pablo Verón) to enliven the duo’s tempestuous backstory through a series of dance re-creations, the style and mood of which change with the period. Add to that Nieves’s participation in the creation of the musical flashbacks (and an executive producer named Wim Wenders) and you have an equitable, beautifully crafted document about a pair of married but emotionally ever-changing dance partners. (2015) — Scott Marks
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