I'm interested in the cynical old gent who is the only one immune to the siren song of the beautiful choirboy.

(By the way, a side note: choirboys starve too when there is famine.)

The old man seems to me a classic portrayal of the old Jewish trade unionist, the kind of person who in New York would have been a Wobbly. He has courage right to the bone - nothing is going to make him rise to his feet when all others have, because he recognises the fascism of the song and the singer.

In him, we're looking at a portrait of the walking dead. If he's not murdered as he leaves the cafe, during a "spontaneous street riot", he will certainly be shipped to a camp and murdered within months.

If you want to know the name of the accordion tune, post a clip of it on Twitter or Facebook and six people will probably come right back to you within the hour with the name.