Neos does not have the drum set for proper rhythm, but she can keep rhythm with her hands, and the tap of stone on metal-- how does she know where the floor would make that rich bit of deep reverb?-- provides a measure if she claps on the last beat.

The harmonies are things that she's never heard-- how could she? But simply keeping the rhythm steady is taking up enough of her time, kinesthetics and precision and concentration blending into a moment where she's very nearly the music.

But... It's too perfect. Like a drum machine told to make a tom loop with claps and taps and the industrial sound of the floor of the Nashira.