there is a mob in the street below , waiting for one of the popes to try to get through and so i go over to the edge of the roof over the doorway and pull out my pennywhistle and toots out a high and shrill bit that 'll carry over the noise of the throng and i gets some cheers and so i goes on and gives 'em a few more , but then there 's a real roar , `` here they come ! ''