He moved his groceries to one hand as he raised the other to knock on the door. He had spent the last two days, gathering up the ingredients she had listed for him to bring. He had left them in his room as he had collected them, so as not to alert Hermione to his activities, and had gotten the perishable things just before coming over to her house. It had been a first for him; three days in a row he had visited the market. It was amazing; he had known right were the last items he needed were in the store, and felt smug as he stood in line, feeling right at home. Maybe I can get the hang of this, he thought to himself as he then apparated to the address she had written out.
He paused before knocking and leaned to put his ear to the door. He could hear some lovely music coming from inside, and wondered if that was her playing her instrument. He hesitated, his head resting on the door so that he could listen longer. Hating to interrupt her playing, he raised his hand again and this time, knocked firmly.