As double acts go, they don't come much more dynamic than Mari Wilson and Ian Shaw, who dusted Stoke-by-Nayland Golf Club's Garden Room last night with a touch of glamour, a smattering of camp asides, the odd ribald show-business tale and, above all, majestic vocal talents that temporarily made this unpromising venue feel like the epicentre of musical sophistication.
Old friends and occasional collaborators as they might be. But their Fleece Jazz gig only came about at the eleventh hour - Adrian York, Mari's regular pianist and co-writer having been taken ill the previous weekend. Shaw stepped into the breach with alacrity, consummate keyboard skills and that resonant voice that swings absorbingly between husky soulfulness and the yearning ache of a consummate male torch singer.
Despite Mari's request to bear with their lack of preparation, they were so obviously - and professionally - at ease with each other's musical strengths and instincts that on the rare occasion that meltdown threatened (most hysterically as improvisation came to the rescue when the lyrics deserted them for "Something Stupid" at the start of the second set), they readily pulled themselves back from the brink.
There was a comically awkward start: the room was long and when they were introduced, they were so far back that by the time they actually arrived, the audience's greeting had petered out. "The applause grew as the artists reached the stage," joked Shaw with just the right hint of acid, and we knew we'd have to be on our mettle as they batted anecdotes and memories to and fro between songs. "Whoop as much as you like," said Mari. "We don't mind - we're common". But in truth there was nothing common about the two sets that followed.
Shaw's jazz-accented playing, always sympathetic to Wilson's fluid, smooth phrasing, also spurred her to invention. By the end of the evening, she was letting fly with some exhilarating gospel-tinged soul riffs. In a recent interview, she told me that "Cry Me A River" - pretty much her signature song - was, like any one of those well structured, well-written standards, the musical equivalent of a football pitch. Its lyrical truths allow the singer to take it and try it out in any direction. Last night, she took it out to the left field with some dazzling extemporisation, steered by Shaw's ominous, subdued accompaniment. It was as fine an interpretation as you're ever likely to hear.
But there were numerous other highlights. "Perhaps, Perhaps, Perhaps" (which Wilson sung as the theme to the BBC comedy Coupling), "Just What I Always Wanted" (her biggest chart hit from the 1980s, key helpfully lowered by Shaw, revealing that it remains one of the era's best crafted pop songs) and "My Love" (an interpretation of touching emotional maturity), all demonstrated what an accomplished singer she is these days. So, too, did a couple of Dusty Springfield numbers - "I Close My Eyes and Count to Ten" and "Son of a Preacher Man" - in which, while paying homage to an all-time-great, she triumphantly applied her own nuances and melodic lines. No ghosts were invited to this party.
From time to time, she retreated to a corner of the stage. We were, as she pointed out, getting two for the price of one, and Shaw seized his moments with grace and vocal power - particularly for a resonant "You've Lost That Loving Feeling" (sung as a retort to Wilson's "Be My Baby") and an extraordinary version of Joni Mitchell's "Amelia", which had the entire room transfixed by its beauty and eloquence.
It might have been "thrown together" as Mari put it, but this was a memorable evening, defined by the innate class of two performers at the top of their respective trees.