The Soul Rebels sidle back out for their encore at the Nerve Centre, launching their audio assault with the refrain “Derry, what the hell are you waiting for?”

From there, the brass band from New Orleans launch into their reworking of a classic Jay-Z track – fittingly also called Encore – saxophone, trumpet and colourfully decorated tuba blasting one last track for the night.

Their klaxon-call strikes a particular chord after a manic jaunt to the north-west to take in the town and its annual jazz festival, this year given extra zest as part of the European City of Culture celebrations.