He lifted two lengths of black cloth and tied one around her eyes to blindfold her. Then, to her surprise, he pressed another to her mouth. "Open," he murmured. She complied, and he fixed the makeshift gag behind her head. "I suspect this room will make you more vocal than most, and I would hate for your mouth to get you into trouble, so... this should take care of that. But since you won’t be able to use a safeword and given the ambient noise, a snap might be easily missed..." he pressed a small metal item into her hand and she clasped it. "Drop this bell if at any point you need me to stop. You can also drop it between instruments to indicate that you have reached your limit and do not want to proceed further. Please don’t let pride push you beyond your limits. I expect you to enjoy this, not suffer. Nod if you understand." She nodded, and then she heard him step away before moving around her, behind her. 