It feels like the first time they've really played together that wasn't for the sake of putting souls to rest or calming fierce corpses and other resentful energies. He puts the flute to his lips and starts in, taking only a note or two to match Lan Zhan's pace. He knows the song well, despite hearing it so few times, and tries to keep even the high notes soft, excited to hear Lan Zhan sing when he's not barely conscious enough to enjoy it.