"One is the loneliest number," but I like being alone - sometimes. I don't like being home alone, too jumpy for complete solitude, would prefer to spend time with someone when we're in separate rooms because distant sounds of life are more comforting than no sounds at all.
Music is good at filling in the gaps, it twists up the stairs and under doors until the house bursts (into song). It's like colours for your ears, not quite your housemate coughing downstairs, but it fits in with being alone being alone fits in with music being alone doesn't fit in with people.