You could forgive then for being weary – this was the third but last night on an arduous 40-date UK tour covering four months.

But Kathryn Roberts and Sean Lakeman looked fresh as a daisy as they ran through a sparking repertoire of old and new tunes during an affable evening..

Last time I saw them was in a draughty barn when some of their more intricate moments were simply lost to the elements.

But the intimate surroundings of the Lighthouse’s revamped Sherling Studio proved perfect for the husband and wife duo’s uplifting and passionate sound.

The double BBC Radio 2 Folk Awards winners remain very much folk’s unsung heroes, yet seeing them proves every time just how beautiful and inspiring their music can be.

Yorkshire-born Kathryn and Sean, eldest of the Dartmoor folk dynasty, have performed together since 2001 and have toured as an acoustic duo since 2011 after a career break to have their twin daughters – now nine and running the merchandise stall tonight.

Roberts performed sitting down at the keyboard, the legacy of a snapped achilles tendon sustained while Irish dancing in Plymouth, with Lakeman by her side switching between two acoustic guitars.

His playing is stunningly good and her voice crystal clear; they work perfectly together (as they should) and a varied 16-song set ranged between tales about lonely whales and evil mermaids to Antwerp’s etymology and homages to Dartmoor.

Highlights included the politically-charged and topical ‘Dartmoor protest blues’ song Tomorrow Will Follow Today and the contemplative The Wisdom Of Standing Still.

And, of course, Roberts just had to perform the exquisite, moving, life lesson number A Song To Live By. She was asked for the words so many times that the pair produced a greetings card containing the lyrics.

I know this because we have one on the mantelpiece.