Mid-song, the great blues singer Blind Willie McTell had a habit of urging himself to "put a little bit of that good stuff in". Anyone seeking a definition of this elusive "good stuff" should look no further than the Blind Boys of Alabama. After 60 years and numerous Grammy awards the gospel veterans still clearly believe that salvation can be achieved only by feats of hair-raising funkiness.

They appear wearing almost ridiculously loud red suits, leading each other on to the stage for an evening of what can only be described as devotional mayhem. Chief culprit is Jimmy Carter, a slightly built man with a voice that is a cross between James Brown and a roaring lion. At one point he goes walkabout in the audience, guided by guitarist Caleb Butler, who keeps jokingly trying to drag him back on to the stage. Carter hollers until the concert hall has descended into pandemonium; no one leaps forward and prostrates themselves at his feet, but some do come close. Compared with this show-stopping 10 minutes the rest of the gig feels almost low-key, although in truth the intensity level rarely flags. When it does, it's often because the group's choice of material is unworthy of them (Spirit in the Sky in particular sounds like a wedding disco chug-along).

Band leader Clarence Fountain is a genial host, eliciting three big laughs before the group has sung a note.

With timeless old favourites Amazing Grace and Down by the Riverside receiving an injection of "the good stuff", it's easy to forgive the set-list's occasional lapses of taste.