"I was mesmerised by their tone and sonic richness,'' she says. ''They are essentially a vocal orchestra. The last 18 months of working with them in Georgia has been so inspiring. I am immensely looking forward to performing with them across the UK and Europe this winter.
"I've been asked a fair few times why I chose to write around the theme of winter for this album, and, truthfully, the idea came from a conversation I was having with a friend of mine a few winters' ago. We were both lamenting the fact that there didn't seem to be a go-to album out there for us to listen to during the winter months – an album that would fill the house with wonderful, warm, poignant sounds rather than the usual jingle-bells pop songs that tend to hit the airwaves during that time of year. Something we could listen to from start-to-finish rather than on a song-by-song basis. So, that's how the album was born – out of necessity!"
"I had to have it on the album; it took me close to the mythical notion I have from my youth of the Russian forest, frozen and covered in snow, and of my Granddad's tales of escaping from a Siberian labour camp."
"I feel the stillness of the winter season really causes us to reflect on our lives and relationships, wondering if our loved ones share the same feelings when it comes to growth and the fear of change. I consider Don Black a master of lyric writing, and the words in this song sit right at the heart of a lover's insecurity."
The video features Katie and choir members performing in the historic Georgian National Opera and Ballet Theatre of Tbilisi which reopened in January 2016 after a multi-million pound refurbishment.
Speaking about the choice of venue Katie explains: "In 2014, during the renovations, I was shown round the theatre by Zurab Lomidze who was director of the opera house in 1991 at the time of the civil war. In many ways the theatre symbolises a new phase for the country. The beauty and opulence of the building was at odds with my childhood memories of Tbilisi and it gave me a great sense of hope for the country's future, that a place of art and culture has been so lovingly restored."
The album closes with a delicate and restrained performance of O Holy Night, a carol that Katie performed at her first school carol concert in Belfast.
With the recording complete, Katie wanted the artwork to represent the magical winter wonderland in her imagination. On a trip to her local bookshop she discovered the work of London-based Thai illustrator Niroot Puttapipat who has illustrated such notable book titles as The Nutcracker, The Rubáiyát of Omar Khattám, and Jane Austen's Emma. Puttapipat is responsible for the album's cover art, as well as the illustrations within the physical albums.