Malfoy’s face was a puzzle in and of itself; a mask of schooled stoicism, but occasionally the corners of his mouth would turn up into that smirk he always seemed to wear in school. His brow furrowed occasionally, usually when the chords were more complex and required extra concentration to execute perfectly (which he did, as far as Hermione could tell). As the songs rolled into each other, a slight sheen of perspiration appeared on his face, along with a rosy flush that probably had more to do with the heat of the lights than anything else. 