The Sisters of St Rupertsberg can be recognised during the opening band, if one looks carefully, by the key on a ribbon around each of their necks. They listen politely in groups of twos and threes, incognito among the hipsters, then sidle backstage to tune up. Turnout's low for the venue, but there's not much when you're splitting the door takings eight ways anyway. The Sisters don't care. They're spreading the gospel of good music, one bloody heathen at a time.

"This one's 'I'm So Fucking Goddamn Lonely'," says Sister Kate, leaning into the microphone. "One, two, one two three four!"