Chris’s parish recessed to this lovely Taizé chant recently. It is by Jacques Berthier. Apart from Gather Australia it is available in the hymnals noted at Hymnary and my version is in Songs & Prayers from Taizé. There they have the English and Spanish texts and a cantor line that goes over the chant of the assembly. They also have flute, trumpet and cello parts.
Cantus Mundi have the text and have aggregated You Tube clips and links and the sheet music can be purchased at GIA.