[Maybe he doesn’t notice because it’s from his own subconscious mind, but he doesn’t even know what he's referring to, still caught in the wake of that kiss, his cognizant self trying to root himself back into an awareness that isn’t just Alec's lips.

He breathes out lightly against his mouth and blinks. What…?

Oh. The music. He knows that tune.]

That… [He trails off for a moment, finding that he can’t even bother to deny where or who it came from.] There’s not much, but there are one or two songs that I don’t mind. And maybe I wanted one, too, that was associated with…

[He looks at Alec, his gaze meaningful.]

…a good memory.