And as soon as Kathryn Williams opened her mouth, we understood what that feeling was like.

Such a sweet, pure voice, perfectly accompanied by Neill MacColl (it's obligatory here to mention he is the son of Ewan MacColl and Peggy Seeger) on vocals and guitar.

Their set ranged from tracks on their current CD, Two, which has had some fantastic reviews to some of Kathryn's own work - What Am I doing Here from her album Dog Leap Stairs is worth singling out. They also did a cover of the Tom Waits' song 'Innocent When You Dream' and one or two other rockier pieces. Well as rocky as angels can get.

Some of the songwriting was as beautiful as the voices - "I swallowed purple when you left, threw orange into the sea. All along the grey was in me" ran one lyric.

The pair were on stage for about an hour an half. Between the songs there was gentle chit chat, mainly about the copious amounts of Benelyn Kathryn has been taking to get over the flu bug which Neill had apparently passed on to her. It didn't affect the performance, it was the last night of their short tour and what a shame it wasn't to a packed house.

Their encore was a version of Leonard Cohen's Hallelujah - spine-tingling stuff.