Screech of brakes suddenly applied in an adjacent street

I looked over to my Mum as she sat there with an impassive face, ready to give me any signs or prompting that I might need. Dad was sat behind me with his accordion, just as we had rehearsed dozens of times over the last few days. He struck up the riff and I waited until he had played it 4 times. From the audience there came loads of shushing ... ................
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