Lucifer did his utmost to stop himself from swaying too much as he played, though most people wouldn't believe it Lucy did posses manners it was just that the number of people he thought highly enough of to care what they thought of his behavior were so few he never actually used them. "La Traviata" he whispered the name under his breath and tried his hardest to think back, "Giuseppe Verdi".
He finished the piece and let the last few noted drift off before lifting his fingers from the keys to pick up his glass. "It's a beautiful piece...Tragic though if I recall correctly." He drank from his glass and closed his eyes to think, "Viola? Violette?" It'd been years since he'd seen the piece performed and it was usually a decent bet around the time that Lucifer was frequenting theatre that he may not remember things like names or lyrics. He could remember music though, he could always tell someone about the music afterward. "I can't remember that well, I more reveled at the theatre than attended it. You'll have to sing some of it for me." He leaned against the piano and turned himself towards her.
Maybe it was his third drink or maybe it was the music or maybe it was the way she was enjoying the music but Lucifer realized exactly how much he was enjoying Ruby, a lot, and in a way that he hadn't enjoyed someone's company in quite some time. "Only...only if you want to" he said through a smile.