Before he could shut the door, the birdsong began.  Even through the earmuffs, the music was hard to resist.   Jean was helpless in its thrall and, as he stood and listened, Potter said, "Mind if we come in?" before he barged his way past the unmoving Jean.  Draco followed him and set the birdcage down on a small table so he could shut the door.  The bird ruffled his feathers and stopped.