For the first time in a decade, they weren’t rivals. They were a rondo duo —the cyclical theme meeting the responsive partner. He played the sturdy refrain; she wove a counterpoint around it. She surged into a wild variation; he anchored her with the home key.

The rain stopped. The water receded. Their music wove through the wet streets, a single, breathing thing.

Now, they played in rival clubs across the same cobbled square. Leon’s “Rondo Royale” was all structure, precision, and lonely perfection. Elara’s “Duo Den” was improvisation, collaboration, and smoky chaos. Neither crossed the street. Neither spoke.

Leon was a master of the rondo —its recurring theme a comfort, a home he always returned to. Elara, his rival, was the duo —a creature of harmony, her hands always reaching for another’s melody. They had shared a Steinway once, years ago, their fingers dancing in a Dvořák duet that made the conservatory’s chandelier tremble. Then, a bitter betrayal over a misinterpreted chord left them shattered.

“The piano has four hands,” she said.