Performing successful albums in their entirety is a wheeze popular with acts needing to tour to pay their way when the record industry no longer works for most artists.

Performing somebody else’s album in its entirety is perhaps a first. Rory Gallagher’s live album Irish Tour ’74 inspired generations of guitarists with a passion that matched his technical ability.

Among them was the American blues guitarist Joe Bonamassa, who, now 48, wasn’t even born when Gallagher was touring Ireland, but he was inspired by this record that he played to death as a kid.

On stage on Tuesday, Bonamassa recalls that when the promoter Peter Aiken asked if he would like to play an entire set of Gallagher covers in Gallagher’s hometown of Cork, he responded “F***, yeah”, but when he thought about what he had let himself in for he added another four-letter expletive, this one beginning with an S.