What do you do when the music stops?

I played a Chopin nocturne yesterday and, halfway through, realised I’d been holding my breath. Not in tension—just… waiting for something to happen. The room was quiet after, and I didn’t move for a long time. It’s strange how silence can feel like a question. I keep wondering: what do you do when the music stops? Not the performance, not the applause—just the moment between notes, when nothing is expected.