The A block will make more sense when you’ve seen this video. You will have special insight into a bit which may or may lot have worked. We shall see!
This is the gag that I've been doing at the end of my show- it's different every time because I'm working it with local guys. But these guys had to be the best so far- with no rehearsal they pulled off the "heckling barbershoppers" routine. And their singing was great too. Have a look.