Everybody finished the song at different times. At last, only the Weasley twins were left singing along to a very slow funeral march.
I thought it sounded a bit like Percy singing... maybe you've got to attack him while he's in the shower, Harry.
Harry ran upstairs to their dark dormitory. He pulled out the cloak and then his eyes fell on the flute Hagrid had given him for Christmas. He pocketed it to use on Fluffy — he didn’t feel much like singing.