This is a song by Kavisha Mazzella, a Melbourne-based singer-songwriter with Italian, Scottish and Burmese roots, and arranged by Bruce Knight, a choir leader from Warwickshire.
Come and take me
To your ocean
Cymer fi lawr
I dy foroedd
A video of Bangor Community Choir singing this song in the music room in Penrhyn Castle on 5th July 2014:
Another recording of this song made in the cathedral in Oloron Sainte-Maire in May 2015 featuring Bangor Community Choir, Coastal Voices and le Chœur Sensible