He faded in and out as she played, not entirely aware of where he was the longer he leaned against her. Exhaustion pulled at him and his muscles wouldn't stop aching. When she stopped, he didn't notice, not immediately, but she shifted and he groaned. He didn't want to move!

"Why'd ya stop playin'?" he mumbled. "You shouldn't." 

Maybe, he realized, she found him rude falling asleep while she played. Taking far more effort than he expected, he made himself sit up. Maybe he sat up too fast, or something, but the room suddenly spun (or maybe it was his head), but grabbed at the piano keys, a loud mashing of sound announcing his slip to the floor. 

And he didn't want to move as he shivered there on the flagstone floor.